No problem, we've got 5237 and 2163 to multiply
5237 × 2163 = 2163 × (5237)
+ 2163 × 7 what gives us 15141
+ 2163 × 30 that is equal 64890
+ 2163 × 200 yielding 432600
+ 2163 × 5000 that equals 10815000

= 11327631
