Alright, let's work through 2791 times 9851 step by step
2791 × 9851 = 9851 × (2791)
+ 9851 × 1 that results in 9851
+ 9851 × 90 that results in 886590
+ 9851 × 700 what gives us 6895700
+ 9851 × 2000 resulting in 19702000

= 27494141
