Alright, let's work through 7715 times 5558 step by step
7715 × 5558 = 5558 × (7715)
+ 5558 × 5 which equals 27790
+ 5558 × 10 yielding 55580
+ 5558 × 700 that is equal 3890600
+ 5558 × 7000 that results in 38906000

= 42879970
