We're going to solve 3458 multiplied by 8480
3458 × 8480 = 8480 × (3458)
+ 8480 × 8 resulting in 67840
+ 8480 × 50 giving us 424000
+ 8480 × 400 giving us 3392000
+ 8480 × 3000 producing 25440000

= 29323840
