Alright, let's work through 1023 times 7198 step by step
1023 × 7198 = 7198 × (1023)
+ 7198 × 3 what gives us 21594
+ 7198 × 20 which equals 143960
+ 7198 × 000 yielding 0
+ 7198 × 1000 what gives us 7198000

= 7363554
