Alright, let's work through 4279 times 9721 step by step
4279 × 9721 = 9721 × (4279)
+ 9721 × 9 yielding 87489
+ 9721 × 70 resulting in 680470
+ 9721 × 200 yielding 1944200
+ 9721 × 4000 that equals 38884000

= 41596159
