No problem, we've got 3415 and 8378 to multiply
3415 × 8378 = 8378 × (3415)
+ 8378 × 5 that results in 41890
+ 8378 × 10 that equals 83780
+ 8378 × 400 giving us 3351200
+ 8378 × 3000 producing 25134000

= 28610870
