Alright, let's work through 53992897 times 91420731 step by step
53992897 × 91420731 = 91420731 × (53992897)
+ 91420731 × 7 yielding 639945117
+ 91420731 × 90 resulting in 8227865790
+ 91420731 × 800 that results in 73136584800
+ 91420731 × 2000 resulting in 182841462000
+ 91420731 × 90000 giving us 8227865790000
+ 91420731 × 900000 what gives us 82278657900000
+ 91420731 × 3000000 producing 274262193000000
+ 91420731 × 50000000 producing 4571036550000000

= 4936070112547707
