what does ln5 divided by ln4+4ln5 equal
Just use a calculator and take the natural log(ln) of your numbers:
ln5 divided by ln4+4ln5 equal
ln5=1.609438
ln4=1.386294
4ln5=4 x 1.609438=6.437752
[1.609438] / [1.386294 + 6.437752]
=0.205704......etc. And that is it.