Alright, let's work through 2661 times 7726 step by step
2661 × 7726 = 7726 × (2661)
+ 7726 × 1 that is equal 7726
+ 7726 × 60 resulting in 463560
+ 7726 × 600 that is equal 4635600
+ 7726 × 2000 giving us 15452000

= 20558886
