No problem, we've got 5403 and 3171 to multiply
5403 × 3171 = 3171 × (5403)
+ 3171 × 3 which equals 9513
+ 3171 × 00 producing 0
+ 3171 × 400 what gives us 1268400
+ 3171 × 5000 giving us 15855000

= 17132913
