Alright, let's work through 98456878 times 84712634 step by step
98456878 × 84712634 = 84712634 × (98456878)
+ 84712634 × 8 producing 677701072
+ 84712634 × 70 what gives us 5929884380
+ 84712634 × 800 that equals 67770107200
+ 84712634 × 6000 resulting in 508275804000
+ 84712634 × 50000 what gives us 4235631700000
+ 84712634 × 400000 resulting in 33885053600000
+ 84712634 × 8000000 giving us 677701072000000
+ 84712634 × 90000000 that is equal 7624137060000000

= 8340541470796652
