Alright, let's work through 6781 times 1555 step by step
6781 × 1555 = 1555 × (6781)
+ 1555 × 1 that is equal 1555
+ 1555 × 80 that is equal 124400
+ 1555 × 700 resulting in 1088500
+ 1555 × 6000 that equals 9330000

= 10544455
