I have a Proposal, in the proposal there is a sheet that gathers the the
facility upgrade cost, production man hours, by building and other info.

One thing I need for this sheet to do is take the Production hrs per
building and calculate installation days per building. Here is the formula I
am using:

=IF(E5<6,1,ROUND(E5/($F$3*8)*1.3,0))

In this case:

E5 is (7.9) Production Hrs By Building and is gathered from the Costing Tab
or Sheet in the Proposal

F3 is estimated crew size of (3) and is gathered from the Costing Tab or
Sheet in the Proposal

Currently I am getting irratic calculations shown below. I would like for it
to show a part of a day if it is 7.9 hours to do the job and there are 3 men
working 8 hours a day it should show something like 0.34 intallation time day
with a Safety Factor.

Production Hrs By Bldg Installation Time (Days) with Safety Factor
E5 7.9 0.0
E6 0.8 1.0
E7 3.2 1.0
E8 6.4 0.0
E9 3.3 1.0
E10 19.5 1.0