Alright, let's work through 7874 times 1289 step by step
7874 × 1289 = 1289 × (7874)
+ 1289 × 4 giving us 5156
+ 1289 × 70 which equals 90230
+ 1289 × 800 what gives us 1031200
+ 1289 × 7000 yielding 9023000

= 10149586
