Alright, let's work through 84735239 times 54734013 step by step
84735239 × 54734013 = 54734013 × (84735239)
+ 54734013 × 9 producing 492606117
+ 54734013 × 30 that results in 1642020390
+ 54734013 × 200 what gives us 10946802600
+ 54734013 × 5000 what gives us 273670065000
+ 54734013 × 30000 giving us 1642020390000
+ 54734013 × 700000 which equals 38313809100000
+ 54734013 × 4000000 resulting in 218936052000000
+ 54734013 × 80000000 what gives us 4378721040000000

= 4637899672984107
