No problem, we've got 5147 and 1947 to multiply
5147 × 1947 = 1947 × (5147)
+ 1947 × 7 that is equal 13629
+ 1947 × 40 which equals 77880
+ 1947 × 100 what gives us 194700
+ 1947 × 5000 resulting in 9735000

= 10021209
