We're going to solve 80423459 multiplied by 90073155
80423459 × 90073155 = 90073155 × (80423459)
+ 90073155 × 9 yielding 810658395
+ 90073155 × 50 what gives us 4503657750
+ 90073155 × 400 yielding 36029262000
+ 90073155 × 3000 which equals 270219465000
+ 90073155 × 20000 that is equal 1801463100000
+ 90073155 × 400000 giving us 36029262000000
+ 90073155 × 0000000 that equals 0
+ 90073155 × 80000000 that results in 7205852400000000

= 7243994688143145
