Alright, let's work through 7157 times 1659 step by step
7157 × 1659 = 1659 × (7157)
+ 1659 × 7 that is equal 11613
+ 1659 × 50 which equals 82950
+ 1659 × 100 that is equal 165900
+ 1659 × 7000 yielding 11613000

= 11873463
