Alright, let's work through 7478 times 1866 step by step
7478 × 1866 = 1866 × (7478)
+ 1866 × 8 that results in 14928
+ 1866 × 70 that is equal 130620
+ 1866 × 400 that is equal 746400
+ 1866 × 7000 producing 13062000

= 13953948
