No problem, we've got 4139 and 4916 to multiply
4139 × 4916 = 4916 × (4139)
+ 4916 × 9 yielding 44244
+ 4916 × 30 that equals 147480
+ 4916 × 100 which equals 491600
+ 4916 × 4000 resulting in 19664000

= 20347324
