No problem, we've got 3938 and 5405 to multiply
3938 × 5405 = 5405 × (3938)
+ 5405 × 8 which equals 43240
+ 5405 × 30 what gives us 162150
+ 5405 × 900 that results in 4864500
+ 5405 × 3000 giving us 16215000

= 21284890
