Alright, let's work through 40752406 times 16707397 step by step
40752406 × 16707397 = 16707397 × (40752406)
+ 16707397 × 6 which equals 100244382
+ 16707397 × 00 that equals 0
+ 16707397 × 400 that results in 6682958800
+ 16707397 × 2000 that results in 33414794000
+ 16707397 × 50000 that results in 835369850000
+ 16707397 × 700000 that equals 11695177900000
+ 16707397 × 0000000 what gives us 0
+ 16707397 × 40000000 which equals 668295880000000

= 680866625747182
