36 + 78 + 198 + 475 + 620 = 1,407
620.
620=500+12 tens 12 tens=12*ten=120 500+120=620 couldn't had just googled it?
360
The answer = 3450
56 + 564=620
120
120 + 120 = 240
The answer = 4530
9 plus 2 plus 2 plus 45-678 is equal to -620.
620 + 100 = 720.
60 + 60 + 120 = 240