Alright, let's work through 7380 times 1066 step by step
7380 × 1066 = 1066 × (7380)
+ 1066 × 0 producing 0
+ 1066 × 80 what gives us 85280
+ 1066 × 300 resulting in 319800
+ 1066 × 7000 resulting in 7462000

= 7867080
