No problem, we've got 90171487 and 85103126 to multiply
90171487 × 85103126 = 85103126 × (90171487)
+ 85103126 × 7 which equals 595721882
+ 85103126 × 80 what gives us 6808250080
+ 85103126 × 400 that results in 34041250400
+ 85103126 × 1000 that is equal 85103126000
+ 85103126 × 70000 yielding 5957218820000
+ 85103126 × 100000 that equals 8510312600000
+ 85103126 × 0000000 that results in 0
+ 85103126 × 90000000 producing 7659281340000000

= 7673875419768362
