Let's get this math done. We have 358 and we're going to multiply it by 7. This is the same as taking 358 and adding it to itself 7 times.
Step 1: 0 + 358 = 358
Step 2: 358 + 358 = 716
Step 3: 716 + 358 = 1074
Step 4: 1074 + 358 = 1432
Step 5: 1432 + 358 = 1790
Step 6: 1790 + 358 = 2148
Step 7: 2148 + 358 = 2506

So, 358*7 = 2506