Alright, let's work through 61899739 times 43338329 step by step
61899739 × 43338329 = 43338329 × (61899739)
+ 43338329 × 9 what gives us 390044961
+ 43338329 × 30 that results in 1300149870
+ 43338329 × 700 producing 30336830300
+ 43338329 × 9000 giving us 390044961000
+ 43338329 × 90000 that results in 3900449610000
+ 43338329 × 800000 which equals 34670663200000
+ 43338329 × 1000000 that results in 43338329000000
+ 43338329 × 60000000 yielding 2600299740000000

= 2682631253796131
