Alright, let's work through 42828557 times 78471980 step by step
42828557 × 78471980 = 78471980 × (42828557)
+ 78471980 × 7 producing 549303860
+ 78471980 × 50 producing 3923599000
+ 78471980 × 500 that results in 39235990000
+ 78471980 × 8000 giving us 627775840000
+ 78471980 × 20000 producing 1569439600000
+ 78471980 × 800000 which equals 62777584000000
+ 78471980 × 2000000 yielding 156943960000000
+ 78471980 × 40000000 giving us 3138879200000000

= 3360841668332860
