$518646\mathrm{.}3907278.qx3zqy7$

One gallon equals $128$ fluid ounces. The following program intends to read a floating$-$point value from input, convert the valu from fluid ounces to gallons, and output the volume in gallons, but the code contains an error. Find and fix the error.

Ex: If the input is $1\mathrm{.}7,$ then the output is:

$0\mathrm{.}013$ gallons

$1$ # Modify the following code

vol$\_$ounces $=$ input$()$

vol$\_$gallons $=$ vol$\_$ounces $\frac{?}{128}$

print$($f$\text{'}\{$vol$\_$gallons: $.3f$ gallons'$)$