Alright, let's work through 39391468 times 40643101 step by step
39391468 × 40643101 = 40643101 × (39391468)
+ 40643101 × 8 giving us 325144808
+ 40643101 × 60 giving us 2438586060
+ 40643101 × 400 that equals 16257240400
+ 40643101 × 1000 yielding 40643101000
+ 40643101 × 90000 which equals 3657879090000
+ 40643101 × 300000 that is equal 12192930300000
+ 40643101 × 9000000 that equals 365787909000000
+ 40643101 × 30000000 that is equal 1219293030000000

= 1600991412462268
