No problem, we've got 6553 and 520 to multiply
6553 × 520 = 520 × (6553)
+ 520 × 3 that is equal 1560
+ 520 × 50 that equals 26000
+ 520 × 500 that equals 260000
+ 520 × 6000 that is equal 3120000

= 3407560
