Let's calculate 80217796 x 90129473
80217796 × 90129473 = 90129473 × (80217796)
+ 90129473 × 6 which equals 540776838
+ 90129473 × 90 that equals 8111652570
+ 90129473 × 700 yielding 63090631100
+ 90129473 × 7000 yielding 630906311000
+ 90129473 × 10000 producing 901294730000
+ 90129473 × 200000 resulting in 18025894600000
+ 90129473 × 0000000 which equals 0
+ 90129473 × 80000000 that results in 7210357840000000

= 7229987678701508
