Alright, let's work through 2379 times 7801 step by step
2379 × 7801 = 7801 × (2379)
+ 7801 × 9 what gives us 70209
+ 7801 × 70 producing 546070
+ 7801 × 300 that equals 2340300
+ 7801 × 2000 giving us 15602000

= 18558579
