Alright, let's work through 53879834 times 71992898 step by step
53879834 × 71992898 = 71992898 × (53879834)
+ 71992898 × 4 which equals 287971592
+ 71992898 × 30 which equals 2159786940
+ 71992898 × 800 that results in 57594318400
+ 71992898 × 9000 that is equal 647936082000
+ 71992898 × 70000 yielding 5039502860000
+ 71992898 × 800000 yielding 57594318400000
+ 71992898 × 3000000 what gives us 215978694000000
+ 71992898 × 50000000 resulting in 3599644900000000

= 3878965393418932
