Alright, let's solve this math problem step by step. First, we have the number 120. Next, we see the multiplication sign, which means we need to multiply something. And what are we multiplying it by? We multiply it by 7. So, we're going to take the number 120 and add it to itself 7 times.
Step 1: 0 + 120 = 120
Step 2: 120 + 120 = 240
Step 3: 240 + 120 = 360
Step 4: 360 + 120 = 480
Step 5: 480 + 120 = 600
Step 6: 600 + 120 = 720
Step 7: 720 + 120 = 840

So, 120*7 = 840