Alright, let's work through 61615191 times 61431443 step by step
61615191 × 61431443 = 61431443 × (61615191)
+ 61431443 × 1 that results in 61431443
+ 61431443 × 90 yielding 5528829870
+ 61431443 × 100 that equals 6143144300
+ 61431443 × 5000 resulting in 307157215000
+ 61431443 × 10000 producing 614314430000
+ 61431443 × 600000 that results in 36858865800000
+ 61431443 × 1000000 giving us 61431443000000
+ 61431443 × 60000000 yielding 3685886580000000

= 3785110093850613
