hu come up with such straenj numbers.
me no yu did NOT reelee plae around with snakes
(9/5/8) - (1/7/8)...depend on how yu look at it
most kommon pinyun is that (9/5/8) =(9/5) divided bi 8
9/5=1.8
then 1.8/8=0.225
(1/7) divide bi 8 =1/56=0.017857142
so 0.225 -0.018=0.207