No problem, we've got 6540 and 6581 to multiply
6540 × 6581 = 6581 × (6540)
+ 6581 × 0 that results in 0
+ 6581 × 40 yielding 263240
+ 6581 × 500 that is equal 3290500
+ 6581 × 6000 what gives us 39486000

= 43039740
