No problem, we've got 6517 and 4131 to multiply
6517 × 4131 = 4131 × (6517)
+ 4131 × 7 giving us 28917
+ 4131 × 10 giving us 41310
+ 4131 × 500 what gives us 2065500
+ 4131 × 6000 yielding 24786000

= 26921727
