diff --git a/plugin/makecols.vim b/plugin/makecols.vim
index 271a64d..5927e04 100644
--- a/plugin/makecols.vim
+++ b/plugin/makecols.vim
@@ -78,7 +78,7 @@ function! s:convert_selection_vert()
     let lines = len(old_selection)
     echom "Lines: " . lines
     echom "Cols: " . g:makecols_cols
-    let rows = string(lines / g:makecols_cols)
+    let rows = float(lines) / g:makecols_cols
     echom "Rows: " . rows
     " let calc_rows = float2nr(ceil(rows))
     " echom "Rounded: " . calc_rows