No problem, we've got 2166 and 6300 to multiply
2166 × 6300 = 6300 × (2166)
+ 6300 × 6 that results in 37800
+ 6300 × 60 resulting in 378000
+ 6300 × 100 what gives us 630000
+ 6300 × 2000 that results in 12600000

= 13645800
