Alright, let's work through 80342031 times 21303472 step by step
80342031 × 21303472 = 21303472 × (80342031)
+ 21303472 × 1 producing 21303472
+ 21303472 × 30 which equals 639104160
+ 21303472 × 000 that is equal 0
+ 21303472 × 2000 yielding 42606944000
+ 21303472 × 40000 that is equal 852138880000
+ 21303472 × 300000 giving us 6391041600000
+ 21303472 × 0000000 that is equal 0
+ 21303472 × 80000000 giving us 1704277760000000

= 1711564207831632
