小数连减计算题

40.83-8.08-19.646.68-7.78-37.518.87-10.96-1.556.68-11.94-18.297.51-90.11-5.717.47-1.21-11.724.41-4.57-1.352.64-21.95-5.137.62-24.34-6.168.52-48.27-11.424.04-8.05-8.976.24-15.71-56.995.77-78.54-8.123.13-16.33-2.12.83-0.99-1.367.75-34.79-31.589.44-5.11-72.856.39-48.41-4.690.51-31.34-37.230.76-22.84-5.846.57-14.25-18.632.68-29.31-2.651.11-4.79-26.327.58-15.01-8.592.37-72.63-3.475.78-22.85-45.288.08-41.18-11.399.91-91.41-4.292.46-25.58-27.825.66-0.56-23.759.18-51.51-5.719.88-6.08-9.314.64-1.84-5.858.91-51.53-2.960.22-24.61-27.372.01-2.05-12.796.31-93.76-2.494.51-52.39-24.513.67-3.63-2.868.09-29.68-17.147.21-13.39-13.996.11-81.04-8.730.73-23.62-1.599.71-54.21-3.483.23-77.23-2.611.65-6.19-2.283.85-50.73-29.592.07-9.47-31.382.58-77.36-4.666.07-37.53-22.36.04-2.97-2.547.38-22.27-6.62.79-1.54-1.194.33-18.45-52.195.81-10.33-16.315.12-4.95-3.231.92-4.93-6.184.56-78.21-4.242.31-38.92-3.17.82-0.52-4.352.25-33.46-12.443.44-21.48-17.173.66-21.81-35.857.54-43.41-3.247.53-11.01-1.933.67-17.77-15.364.61-41.11-17.417.72-10.27-5.323.17-21.46-1.343.71-27.12-10.243.72-16.39-26.657.71-44.87-5.224.21-14.11-2.270.82-51.58-17.281.61-63.52-13.459.88-54.51-4.855.74-37.51-13.568.01-44.53-1.785.01-55.46-6.823.61-12.25-9.984.91-32.99-39.367.21-59.39-7.158.75-5.82-22.131.37-21.02-10.284.19-78.14-2.825.62-12.11-8.332.69-5.04-22.744.11-7.19-4.170.56-50.85-11.271.25-62.65-7.998.49-96.76-1.211.26-8.57-1.668.72-15.46-52.95.31-0.48-2.185.64-65.71-13.962.05-56.53-3.530.11-11.93-9.19.71-4.87-2.748.23-22.69-20.818.01-12.46-1.750.68-31.71-16.179.57-3.99-5.797.63-41.65-31.593.21-18.85-57.265.56-36.79-7.430.79-7.36-15.795.05-57.33-8.398.31-28.45-58.239.93-19.39-1.165.41-16.82-15.165.66-46.85-10.558.61-5.84-15.117.79-13.82-2.131.02-20.11-10.166.63-16.23-3.764.44-16.41-13.474.81-15.76-12.883.69-71.77-5.466.58-19.28-15.735.09-25.98-6.165.37-19.71-31.151.89-38.11-2.547.96-0.35-1.713.95-3.11-5.756.44-2.79-6.780.14-11.68-55.156.58-9.42-44.757.78-43.48-11.972.41-62.84-4.464.45-51.97-1.530.54-14.49-15.870.51-63.21-3.978.32-50.71-16.429.04-10.92-11.567.54-24.38-9.139.65-13.56-20.994.07-39.94-43.636.81-31.85-3.191.41-72.32-15.913.19-5.02-3.257.19-28.81-13.675.44-28.01-20.461.62-47.64-2.189.61-17.34-33.589.04-43.45-26.480.64-66.55-8.884.31-1.81-39.927.92-4.87-17.666.53-42.43-10.559.66-6.36-40.959.12-16.51-10.466.37-49.81-11.936.09-11.08-1.394.83-12.23-44.845.27-22.48-8.777.48-61.43-6.373.45-25.33-32.773.16-42.56-2.125.04-18.37-6.158.19-41.71-15.337.56-16.75-12.257.73-9.99-28.664.52-7.88-22.675.18-49.67-22.512.75-6.25-2.860.36-23.42-30.539.36-6.41-3.569.61-34.84-8.642.44-3.26-16.178.51-34.62-29.348.35-26.58-1.842.44-3.91-16.633.34-2.92-16.952.81-41.27-3.782.24-15.86-15.177.57-66.15-6.133.89-30.01-2.460.15-53.61-2.139.74-9.56-11.156.55-40.89-1.335.14-19.49-10.278.33-41.73-8.110.39-7.51-2.485.21-31.64-52.39.05-5.64-3.216.53-3.78-11.193.13-63.26-12.666.11-28.13-30.891.62-51.12-12.985.44-45.01-21.660.19-25.25-20.352.91-37.62-6.986.52-10.41-49.467.46-8.02-29.260.53-27.72-3.87.26-2.23-3.315.92-10.92-4.575.62-27.22-40.929.24-8.44-1.659.15-15.91-10.955.02-0.71-4.235.76-21.05-2.894.86-46.36-21.27.94-4.35-3.496.47-66.51-6.889.72-23.88-42.64.51-2.61-1.750.41-0.17-29.728.61-14.76-8.574.91-2.28-36.674.88-23.41-50.238.67-34.48-2.139.87-17.83-21.981.05-78.07-2.153.33-19.21-4.692.74-11.04-81.171.81-7.96-59.414.74-0.37-9.143.31-8.53-15.323.23-20.87-2.15.67-0.51-2.26.88-2.63-3.760.61-27.63-23.628.15-19.18-7.367.62-19.88-46.720.01-1.31-16.931.21-14.07-11.674.14-70.32-3.342.61-11.52-7.574.36-46.26-22.414.46-1.91-3.271.44-18.36-50.325.29-6.66-8.853.81-0.44-26.565.81-25.25-6.650.81-26.82-2.162.15-59.32-2.329.74-17.41-3.314.42-2.91-8.926.98-10.92-10.5