No problem, we've got 1335 and 3947 to multiply
1335 × 3947 = 3947 × (1335)
+ 3947 × 5 resulting in 19735
+ 3947 × 30 that results in 118410
+ 3947 × 300 which equals 1184100
+ 3947 × 1000 that results in 3947000

= 5269245
