Alright, let's work through 77591062 times 51535702 step by step
77591062 × 51535702 = 51535702 × (77591062)
+ 51535702 × 2 that equals 103071404
+ 51535702 × 60 that results in 3092142120
+ 51535702 × 000 that equals 0
+ 51535702 × 1000 which equals 51535702000
+ 51535702 × 90000 which equals 4638213180000
+ 51535702 × 500000 which equals 25767851000000
+ 51535702 × 7000000 that results in 360749914000000
+ 51535702 × 70000000 that results in 3607499140000000

= 3998709849095524
