Alright, let's solve this math problem step by step. First, we have the number 708. Next, we see the multiplication sign, which means we need to multiply something. And what are we multiplying it by? We multiply it by 30. So, we're going to take the number 708 and add it to itself 30 times.
Step 1: 0 + 708 = 708
Step 2: 708 + 708 = 1416
Step 3: 1416 + 708 = 2124
Step 4: 2124 + 708 = 2832
Step 5: 2832 + 708 = 3540
Step 6: 3540 + 708 = 4248
Step 7: 4248 + 708 = 4956
Step 8: 4956 + 708 = 5664
Step 9: 5664 + 708 = 6372
Step 10: 6372 + 708 = 7080
Step 11: 7080 + 708 = 7788
Step 12: 7788 + 708 = 8496
Step 13: 8496 + 708 = 9204
Step 14: 9204 + 708 = 9912
Step 15: 9912 + 708 = 10620
Step 16: 10620 + 708 = 11328
Step 17: 11328 + 708 = 12036
Step 18: 12036 + 708 = 12744
Step 19: 12744 + 708 = 13452
Step 20: 13452 + 708 = 14160
Step 21: 14160 + 708 = 14868
Step 22: 14868 + 708 = 15576
Step 23: 15576 + 708 = 16284
Step 24: 16284 + 708 = 16992
Step 25: 16992 + 708 = 17700
Step 26: 17700 + 708 = 18408
Step 27: 18408 + 708 = 19116
Step 28: 19116 + 708 = 19824
Step 29: 19824 + 708 = 20532
Step 30: 20532 + 708 = 21240

So, 708*30 = 21240