No problem, we've got 7503 and 1107 to multiply
7503 × 1107 = 1107 × (7503)
+ 1107 × 3 which equals 3321
+ 1107 × 00 producing 0
+ 1107 × 500 that equals 553500
+ 1107 × 7000 what gives us 7749000

= 8305821
