Alright, let's work through 9935 times 1866 step by step
9935 × 1866 = 1866 × (9935)
+ 1866 × 5 which equals 9330
+ 1866 × 30 that equals 55980
+ 1866 × 900 which equals 1679400
+ 1866 × 9000 producing 16794000

= 18538710
