Alright, let's work through 1103 times 6791 step by step
1103 × 6791 = 6791 × (1103)
+ 6791 × 3 that is equal 20373
+ 6791 × 00 that is equal 0
+ 6791 × 100 that equals 679100
+ 6791 × 1000 giving us 6791000

= 7490473
