No problem, we've got 7543 and 1803 to multiply
7543 × 1803 = 1803 × (7543)
+ 1803 × 3 what gives us 5409
+ 1803 × 40 giving us 72120
+ 1803 × 500 that results in 901500
+ 1803 × 7000 producing 12621000

= 13600029
