Alright, let's work through 15980887 times 96321122 step by step
15980887 × 96321122 = 96321122 × (15980887)
+ 96321122 × 7 which equals 674247854
+ 96321122 × 80 resulting in 7705689760
+ 96321122 × 800 which equals 77056897600
+ 96321122 × 0000 producing 0
+ 96321122 × 80000 yielding 7705689760000
+ 96321122 × 900000 which equals 86689009800000
+ 96321122 × 5000000 which equals 481605610000000
+ 96321122 × 10000000 producing 963211220000000

= 1539296966395214
