Use bc instead of expr for decimal calculations

cv

@@ -37,7 +37,7 @@ yget(){
 }
 out(){
 	w=10
-	printf "║ %-${w}s ║ %${w}s ║ %-${w}s ║\n" "$1:" "$(get $2)" "+ $(expr $(get $2) - $(yget $2))"
+	printf "║ %-${w}s ║ %${w}s ║ %-${w}s ║\n" "$1:" "$(get $2)" "+ $(echo "scale = 2; $(get $2) - $(yget $2)" | bc)"
 }
 frame(){
 	case "$1" in