Alright, let's work through 7077 times 7747 step by step
7077 × 7747 = 7747 × (7077)
+ 7747 × 7 that results in 54229
+ 7747 × 70 what gives us 542290
+ 7747 × 000 which equals 0
+ 7747 × 7000 yielding 54229000

= 54825519
