No problem, we've got 9903 and 4387 to multiply
9903 × 4387 = 4387 × (9903)
+ 4387 × 3 that results in 13161
+ 4387 × 00 that equals 0
+ 4387 × 900 that equals 3948300
+ 4387 × 9000 that equals 39483000

= 43444461
