Check calculator

Check pocket calculator "heart and kidneys".

Trust is good, control is better! Sometimes doubts arise as to whether the "loyal friend" really spits out the correct numbers he should.

There is a very simple test:

Enter all numbers, from "1-9". Just leave out the "8". Then take the whole thing with "72". Now if a series only "8ER" appear, everything is right and you can blindly trust your baby again!

If not, sometimes check batteries, or carry the good piece in the eternal hunting grounds.

HOW TO CHECK CALCULATOR. | February 2024