Alright, let's work through 7870 times 2787 step by step
7870 × 2787 = 2787 × (7870)
+ 2787 × 0 giving us 0
+ 2787 × 70 giving us 195090
+ 2787 × 800 that results in 2229600
+ 2787 × 7000 which equals 19509000

= 21933690
