No problem, we've got 5728 and 2765 to multiply
5728 × 2765 = 2765 × (5728)
+ 2765 × 8 what gives us 22120
+ 2765 × 20 that is equal 55300
+ 2765 × 700 resulting in 1935500
+ 2765 × 5000 resulting in 13825000

= 15837920
