[AESH-80] fixed possible divide by zero
[AESH-80]
fixed possible divide by zero

aslakknutsen/aesh,brmeyer/aesh,jerr/aesh,gastaldi/aesh,aeshell/aesh,1and1/aesh,ryanemerson/aesh,stalep/aesh,felipewmartins/aesh,jfdenise/aesh