How to calculate a Mod b in Casio fx-991ES calculator

Question

Does anyone know how to calculate a Mod b in Casio fx-991ES Calculator. Thanks

Answer 1

Here's how I usually do it. For example, to calculate 1717 mod 2:

• Take 1717 / 2. The answer is 858.5
• Now take 858 and multiply it by the mod (2) to get 1716
• Finally, subtract the original number (1717) minus the number you got from the previous step (1716) -- 1717-1716=1.

So 1717 mod 2 is 1.

To sum this up all you have to do is multiply the numbers before the decimal point with the mod then subtract it from the original number.