Answer by cas for Convert floating point numbers to decimal numbers

The sed script gets rid of the space after the 'e', and the awk script just prints out each field (multiplying $3 by 1 to "convert" it to a non-fp decimal number):

$ sed -e 's/e /e/g' file | awk '{print $1, $2, $3 * 1}'
1 1 1423
1 2 1589
1 3 85000
1 4 8900
1 5 8796

This assumes that the floating point numbers in the file:

1. have an extraneous space after the 'e'
2. omit the '+' for positive exponents
3. don't have really large exponents otherwise awk will print them as fp.

It's possible to get awk to do the 's/e /e/' transformation (so sed isn't needed) but it's getting late and my brain's tired. sed | awk is easy and it works.