No problem, we've got 4003 and 6501 to multiply
4003 × 6501 = 6501 × (4003)
+ 6501 × 3 giving us 19503
+ 6501 × 00 that equals 0
+ 6501 × 000 that is equal 0
+ 6501 × 4000 giving us 26004000

= 26023503
