A stick is 5 meters long, the part that is inserted into the water is (3/8) meters, and the part that is in the water is (9/4) meters, what is the length of the part that is inserted into the cement?
一根棍子长5米，把它插入水中露出水面的部分是(3/8)米，在水里面的是(9/4)米，插入水泥的部分有多长．
<gadget id="calculator">3 / 8</gadget>
<output>3/8 = around 0.375</output>

<gadget id="calculator">9 / 4</gadget>
<output>9/4 = around 2.25</output>

<gadget id="calculator">5 - (3/8) - (9/4)</gadget>
<output>19/8 = around 2.375</output>

<result>19/8 = around 2.375</result>