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

You can calculate A mod B (for positive numbers) using this:

Pol( -Rec( ¹/_2π^r , 2π^r × ^A/_B ) , Y ) ( π^r - Y ) B

Then press [CALC], and enter your values for A and B, and any value for Y.

/ indicates using the fraction key, and ^r means radians ( [SHIFT] [Ans] [2] )