Let's roll up our sleeves and solve this. We have 544 and we're going to multiply it by 7, essentially adding 544 to itself 7 times.
Step 1: 0 + 544 = 544
Step 2: 544 + 544 = 1088
Step 3: 1088 + 544 = 1632
Step 4: 1632 + 544 = 2176
Step 5: 2176 + 544 = 2720
Step 6: 2720 + 544 = 3264
Step 7: 3264 + 544 = 3808

So, 544*7 = 3808