Alright, let's work through 7980 times 7436 step by step
7980 × 7436 = 7436 × (7980)
+ 7436 × 0 what gives us 0
+ 7436 × 80 giving us 594880
+ 7436 × 900 what gives us 6692400
+ 7436 × 7000 yielding 52052000

= 59339280
