Alright, let's work through 90349528 times 71718430 step by step
90349528 × 71718430 = 71718430 × (90349528)
+ 71718430 × 8 resulting in 573747440
+ 71718430 × 20 that is equal 1434368600
+ 71718430 × 500 what gives us 35859215000
+ 71718430 × 9000 that is equal 645465870000
+ 71718430 × 40000 resulting in 2868737200000
+ 71718430 × 300000 what gives us 21515529000000
+ 71718430 × 0000000 producing 0
+ 71718430 × 90000000 giving us 6454658700000000

= 6479726299401040
