Alright, let's work through 9986 times 2639 step by step
9986 × 2639 = 2639 × (9986)
+ 2639 × 6 that equals 15834
+ 2639 × 80 what gives us 211120
+ 2639 × 900 giving us 2375100
+ 2639 × 9000 resulting in 23751000

= 26353054
