Let's calculate 13423877 x 80340474
13423877 × 80340474 = 80340474 × (13423877)
+ 80340474 × 7 that results in 562383318
+ 80340474 × 70 yielding 5623833180
+ 80340474 × 800 giving us 64272379200
+ 80340474 × 3000 yielding 241021422000
+ 80340474 × 20000 giving us 1606809480000
+ 80340474 × 400000 that equals 32136189600000
+ 80340474 × 3000000 which equals 241021422000000
+ 80340474 × 10000000 yielding 803404740000000

= 1078480641097698
