No problem, we've got 2973 and 6561 to multiply
2973 × 6561 = 6561 × (2973)
+ 6561 × 3 resulting in 19683
+ 6561 × 70 what gives us 459270
+ 6561 × 900 giving us 5904900
+ 6561 × 2000 that results in 13122000

= 19505853
