Alright, let's work through 5385 times 866 step by step
5385 × 866 = 866 × (5385)
+ 866 × 5 resulting in 4330
+ 866 × 80 what gives us 69280
+ 866 × 300 that is equal 259800
+ 866 × 5000 that is equal 4330000

= 4663410
