Xiaoming is (7/5) meters taller, (1/10) meters shorter than Xiaoli, and Xiaojun is (1/5) meters shorter than Xiaoli. How tall is Xiaojun?
小明身高(7/5)米，比小丽矮(1/10)米，小军的身高比小丽矮(1/5)米．小军身高是多少米？
<gadget id="calculator">7 / 5</gadget>
<output>7/5 = around 1.4</output>

<gadget id="calculator">1 / 10</gadget>
<output>1/10 = around 0.1</output>

<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">(1/10) - (1/5)</gadget>
<output>-1/10 = around -0.1</output>

<gadget id="calculator">(7/5) + (-1/10)</gadget>
<output>13/10 = around 1.3</output>

<result>13/10 = around 1.3</result>