Alright, let's work through 77570002 times 17513390 step by step
77570002 × 17513390 = 17513390 × (77570002)
+ 17513390 × 2 that is equal 35026780
+ 17513390 × 00 which equals 0
+ 17513390 × 000 producing 0
+ 17513390 × 0000 producing 0
+ 17513390 × 70000 yielding 1225937300000
+ 17513390 × 500000 which equals 8756695000000
+ 17513390 × 7000000 that results in 122593730000000
+ 17513390 × 70000000 giving us 1225937300000000

= 1358513697326780
