Alright, let's work through 50710135 times 91859921 step by step
50710135 × 91859921 = 91859921 × (50710135)
+ 91859921 × 5 resulting in 459299605
+ 91859921 × 30 which equals 2755797630
+ 91859921 × 100 yielding 9185992100
+ 91859921 × 0000 that equals 0
+ 91859921 × 10000 producing 918599210000
+ 91859921 × 700000 that is equal 64301944700000
+ 91859921 × 0000000 giving us 0
+ 91859921 × 50000000 that results in 4592996050000000

= 4658228994999335
