Will use the drop down menu as to what unit it is.
or
Will disregard the drop down menu and use the unit attached to the number.
or
or
Will show the result in Feet.
Will add the two together and show all the results.
Will add the two together and show the results in Inches.
The numbers with missing units will use the drop down menu as to what unit it is.
Will show how feet can fit in 3 inches.
Will show all the different conversions for an Inch.
Will show all the different conversions for 34 Pounds.
Will add 4 and 7 together using a unit selected from the drop down menu.