Alright, let's work through 3429000 times 72321028 step by step
3429000 × 72321028 = 72321028 × (3429000)
+ 72321028 × 0 which equals 0
+ 72321028 × 00 yielding 0
+ 72321028 × 000 which equals 0
+ 72321028 × 9000 that equals 650889252000
+ 72321028 × 20000 what gives us 1446420560000
+ 72321028 × 400000 what gives us 28928411200000
+ 72321028 × 3000000 giving us 216963084000000

= 247988805012000
