No problem, we've got 5115 and 3902 to multiply
5115 × 3902 = 3902 × (5115)
+ 3902 × 5 which equals 19510
+ 3902 × 10 resulting in 39020
+ 3902 × 100 which equals 390200
+ 3902 × 5000 giving us 19510000

= 19958730
