Alright, let's work through 1102 times 7642 step by step
1102 × 7642 = 7642 × (1102)
+ 7642 × 2 that is equal 15284
+ 7642 × 00 which equals 0
+ 7642 × 100 which equals 764200
+ 7642 × 1000 that equals 7642000

= 8421484
