Alright, let's work through 84455185 times 51596541 step by step
84455185 × 51596541 = 51596541 × (84455185)
+ 51596541 × 5 which equals 257982705
+ 51596541 × 80 that results in 4127723280
+ 51596541 × 100 which equals 5159654100
+ 51596541 × 5000 giving us 257982705000
+ 51596541 × 50000 resulting in 2579827050000
+ 51596541 × 400000 that equals 20638616400000
+ 51596541 × 4000000 that equals 206386164000000
+ 51596541 × 80000000 producing 4127723280000000

= 4357595415515085
