This document demonstrates multiplication problems by showing the step-by-step work of solving 9 x 7 equals 63, and 9 x 28 equals 252, with various numbers written throughout for an unknown reason.

1. SULAP PERKALIAN 9
2 3 45 678 9
1 10

2. SULAP PERKALIAN 9
Sim salabim 9 X 7 = 63
2 3 45 6 12
1 3
7

3. SULAP PERKALIAN 9
Sim salabim 9 X 28 = 252
2 1 23 4 5 1
1 2
8