OK, let's work through this together. We're starting with 523 and we're going to multiply it by 10, which means we add 523 to itself 10 times.
Step 1: 0 + 523 = 523
Step 2: 523 + 523 = 1046
Step 3: 1046 + 523 = 1569
Step 4: 1569 + 523 = 2092
Step 5: 2092 + 523 = 2615
Step 6: 2615 + 523 = 3138
Step 7: 3138 + 523 = 3661
Step 8: 3661 + 523 = 4184
Step 9: 4184 + 523 = 4707
Step 10: 4707 + 523 = 5230

So, 523*10 = 5230