Alright, let's work through 30490451 times 423540 step by step
30490451 × 423540 = 423540 × (30490451)
+ 423540 × 1 which equals 423540
+ 423540 × 50 what gives us 21177000
+ 423540 × 400 yielding 169416000
+ 423540 × 0000 giving us 0
+ 423540 × 90000 that is equal 38118600000
+ 423540 × 400000 that results in 169416000000
+ 423540 × 0000000 yielding 0
+ 423540 × 30000000 yielding 12706200000000

= 12913925616540
