Alright, let's work through 77387310 times 85757527 step by step
77387310 × 85757527 = 85757527 × (77387310)
+ 85757527 × 0 what gives us 0
+ 85757527 × 10 resulting in 857575270
+ 85757527 × 300 yielding 25727258100
+ 85757527 × 7000 yielding 600302689000
+ 85757527 × 80000 giving us 6860602160000
+ 85757527 × 300000 resulting in 25727258100000
+ 85757527 × 7000000 giving us 600302689000000
+ 85757527 × 70000000 that results in 6003026890000000

= 6636544326782370
