No problem, we've got 2124 and 7834 to multiply
2124 × 7834 = 7834 × (2124)
+ 7834 × 4 that results in 31336
+ 7834 × 20 resulting in 156680
+ 7834 × 100 what gives us 783400
+ 7834 × 2000 that results in 15668000

= 16639416
