Alright, let's work through 64050703 times 71379972 step by step
64050703 × 71379972 = 71379972 × (64050703)
+ 71379972 × 3 that equals 214139916
+ 71379972 × 00 resulting in 0
+ 71379972 × 700 which equals 49965980400
+ 71379972 × 0000 what gives us 0
+ 71379972 × 50000 giving us 3568998600000
+ 71379972 × 000000 resulting in 0
+ 71379972 × 4000000 what gives us 285519888000000
+ 71379972 × 60000000 that equals 4282798320000000

= 4571937386720316
