Alright, let's work through 9939 times 5815 step by step
9939 × 5815 = 5815 × (9939)
+ 5815 × 9 yielding 52335
+ 5815 × 30 resulting in 174450
+ 5815 × 900 resulting in 5233500
+ 5815 × 9000 that equals 52335000

= 57795285
