Alright, let's work through 1543 times 7798 step by step
1543 × 7798 = 7798 × (1543)
+ 7798 × 3 which equals 23394
+ 7798 × 40 what gives us 311920
+ 7798 × 500 producing 3899000
+ 7798 × 1000 resulting in 7798000

= 12032314
