Alright, let's work through 7003 times 1233 step by step
7003 × 1233 = 1233 × (7003)
+ 1233 × 3 that results in 3699
+ 1233 × 00 which equals 0
+ 1233 × 000 that is equal 0
+ 1233 × 7000 that is equal 8631000

= 8634699
