Alright, let's work through 7879 times 7155 step by step
7879 × 7155 = 7155 × (7879)
+ 7155 × 9 that is equal 64395
+ 7155 × 70 resulting in 500850
+ 7155 × 800 giving us 5724000
+ 7155 × 7000 that results in 50085000

= 56374245
