Well, first you want to use the PEMDAS format.
P: parentheses
E: exponents
M: multiplication
D: division
A: addition
S: subtraction
You would start off by doing 8 x 107 which equals 856.
Then you would have 856 divided by 6 times 5. ( i am guessing thats 5)
Next, do 6 x 5... whch is 30.
Finally, divided 856 and 30.
Your final answer is 28.53333333.