Summation based benchmark for calculators

[BINUBALL]

I have bought newer casio model, fx-570CW several months ago and reminded this thread. Test results below:

max = 10000
~ 581s - casio fx-570CW, 13955.8579 (sum function)
max = 1000
~ 59s - casio fx-570CW, 1395.346288 (sum function)
max = 100
~ 7s - casio fx-570CW, 139.297187 (sum function)
max = 10
~ 1s - casio fx-570CW, 13.71183502 (sum function)

fx-570CW is significantly faster than fx-570EX. Let's compare them.

1s / 2s (max = 10)
7s / 12s (max = 100)
59s / 109s (max = 1000)
581s / 1073s (max = 10000)