Alright, let's work through 2980 times 7921 step by step
2980 × 7921 = 7921 × (2980)
+ 7921 × 0 what gives us 0
+ 7921 × 80 which equals 633680
+ 7921 × 900 what gives us 7128900
+ 7921 × 2000 producing 15842000

= 23604580
