Alright, let's work through 63141378 times 43728999 step by step
63141378 × 43728999 = 43728999 × (63141378)
+ 43728999 × 8 what gives us 349831992
+ 43728999 × 70 what gives us 3061029930
+ 43728999 × 300 that is equal 13118699700
+ 43728999 × 1000 which equals 43728999000
+ 43728999 × 40000 that results in 1749159960000
+ 43728999 × 100000 that is equal 4372899900000
+ 43728999 × 3000000 that equals 131186997000000
+ 43728999 × 60000000 that equals 2623739940000000

= 2761109255420622
