Answer:
Step-by-step explanation:If the number you're dividing by has a decimal, move the decimal point all the way to the right counting the number of places you've moved it to. ...
Insert a decimal point in the quotient (answer) space, exactly above the decimal point in the number under the division bar.
 
        
             
        
        
        
Your correct. It is what you put down
        
             
        
        
        
7 x 10^5
+ 2 x 10^4
+ 0 x 10^3
+ 0 x 10^2
+ 8 x 10^1
+ 0 x 10^0
        
             
        
        
        
Answer:4000
Step-by-step explanation:
Let them number be a
655% of a=26200
655/100 x a=26200
655a/100=26200
Cross multiplying we get 
655a=26200x100
655a=2620000
Divide both sides by 655
655a/655 = 2620000/655
a=4000