Alright, let's work through 80474290 times 98728141 step by step
80474290 × 98728141 = 98728141 × (80474290)
+ 98728141 × 0 what gives us 0
+ 98728141 × 90 what gives us 8885532690
+ 98728141 × 200 what gives us 19745628200
+ 98728141 × 4000 producing 394912564000
+ 98728141 × 70000 that equals 6910969870000
+ 98728141 × 400000 which equals 39491256400000
+ 98728141 × 0000000 that is equal 0
+ 98728141 × 80000000 that results in 7898251280000000

= 7945077049994890
