#Python 3, 69 bytes I didn't want to copy the Python 2 answer, so mine is slightly longer.
from math import * x=lambda v,a:print(max(1,min(ceil(v/a/70),10))*'*') #Python 3, 69 bytes I didn't want to copy the Python 2 answer, so mine is slightly longer.
from math import * x=lambda v,a:print(max(1,min(ceil(v/a/70),10))*'*')