Alright, let's work through 15481961 times 87197643 step by step
15481961 × 87197643 = 87197643 × (15481961)
+ 87197643 × 1 that equals 87197643
+ 87197643 × 60 that is equal 5231858580
+ 87197643 × 900 that results in 78477878700
+ 87197643 × 1000 producing 87197643000
+ 87197643 × 80000 giving us 6975811440000
+ 87197643 × 400000 that results in 34879057200000
+ 87197643 × 5000000 that results in 435988215000000
+ 87197643 × 10000000 resulting in 871976430000000

= 1349990508217923
