Alright, let's work through 98746067 times 61509909 step by step
98746067 × 61509909 = 61509909 × (98746067)
+ 61509909 × 7 what gives us 430569363
+ 61509909 × 60 yielding 3690594540
+ 61509909 × 000 resulting in 0
+ 61509909 × 6000 that is equal 369059454000
+ 61509909 × 40000 what gives us 2460396360000
+ 61509909 × 700000 which equals 43056936300000
+ 61509909 × 8000000 that equals 492079272000000
+ 61509909 × 90000000 yielding 5535891810000000

= 6073861595277903
