Alright, let's work through 7103 times 2163 step by step
7103 × 2163 = 2163 × (7103)
+ 2163 × 3 yielding 6489
+ 2163 × 00 yielding 0
+ 2163 × 100 which equals 216300
+ 2163 × 7000 yielding 15141000

= 15363789
