Edgar has 2.8 meters of rope. if he cuts it into 7 equals parts, how long will each piece be? how do i figure this out?

Simple. 2.8m/7

2.8 is the same as the mix number 2(8/10) which is
28/10

Divide 28 by 7. 
28/7 = 4

So, 4/10 of a meter. 
Or expressed as a decimal it is: 
.4m 

I’m pretty sure the * means multiplication. so, if you multiply 5*1, it would equal 5. they are basically are-writing 5x1 as 5*1. so they would be… 5 10152025303540455055