No problem, we've got 4124 and 3160 to multiply
4124 × 3160 = 3160 × (4124)
+ 3160 × 4 that equals 12640
+ 3160 × 20 resulting in 63200
+ 3160 × 100 what gives us 316000
+ 3160 × 4000 what gives us 12640000

= 13031840
