Alright, let's work through 83905028 times 42963076 step by step
83905028 × 42963076 = 42963076 × (83905028)
+ 42963076 × 8 resulting in 343704608
+ 42963076 × 20 that equals 859261520
+ 42963076 × 000 yielding 0
+ 42963076 × 5000 that is equal 214815380000
+ 42963076 × 00000 that is equal 0
+ 42963076 × 900000 that results in 38666768400000
+ 42963076 × 3000000 that results in 128889228000000
+ 42963076 × 80000000 that results in 3437046080000000

= 3604818094746128
