Calculation: 10-(7/10)-(3/10).
计算：10-(7/10)-(3/10)．
<gadget id="calculator">7 / 10</gadget>
<output>7/10 = around 0.7</output>

<gadget id="calculator">3 / 10</gadget>
<output>3/10 = around 0.3</output>

<gadget id="calculator">10 - (7/10) - (3/10)</gadget>
<output>9</output>

<result>9</result>