How we will try a few slightly more difficult examples:
4 1. DIVIDE (How many times will 23 fit into 92?) +------- 2. MULTIPLY (4 x 23 = 92) 23 | 92 3. SUBTRACT (92 - 92 = 0) 92 4. REMAINDER ( none ) ----- 0
3 +-------- 27 | 81 81 ----- 0
Try a few for yourself!