Let's get this math done. We have 235 and we're going to multiply it by 7. This is the same as taking 235 and adding it to itself 7 times.
Step 1: 0 + 235 = 235
Step 2: 235 + 235 = 470
Step 3: 470 + 235 = 705
Step 4: 705 + 235 = 940
Step 5: 940 + 235 = 1175
Step 6: 1175 + 235 = 1410
Step 7: 1410 + 235 = 1645

So, 235*7 = 1645