Calculation: (4/3)-((2/5)+(3/10))
计算：(4/3)-((2/5)+(3/10))
<gadget id="calculator">4 / 3</gadget>
<output>4/3 = around 1.333333</output>

<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

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

<gadget id="calculator">(2/5) + (3/10)</gadget>
<output>7/10 = around 0.7</output>

<gadget id="calculator">(4/3) - (7/10)</gadget>
<output>19/30 = around 0.633333</output>

<result>19/30 = around 0.633333</result>