Alright, let's work through 77535681 times 10020612 step by step
77535681 × 10020612 = 10020612 × (77535681)
+ 10020612 × 1 yielding 10020612
+ 10020612 × 80 what gives us 801648960
+ 10020612 × 600 that results in 6012367200
+ 10020612 × 5000 that is equal 50103060000
+ 10020612 × 30000 what gives us 300618360000
+ 10020612 × 500000 producing 5010306000000
+ 10020612 × 7000000 giving us 70144284000000
+ 10020612 × 70000000 giving us 701442840000000

= 776954975456772
