By pressing the buttons on the calculator four times to create a sum, fill the display with as many '3's as possible.
The equals (=) button does not count as one of the four allwed button presses.
You don't need to press the same button more than twice.
The answer to the sum you input will give an answer with the same number repeated ten times.
The number that appears ten times is '3'.
Use a division problem to reach the answer.
There are three different sums that would work here, and they all give the same answer.
One of the sums involves dividing a certain number by three.
The answer is '10รท3'.