Equation: 7x-16=66+2x is the solution of x=how much.
方程：7x-16=66+2x的解是x=多少．
<gadget id="calculator">16 + 66</gadget>
<output>82</output>

<gadget id="calculator">7 - 2</gadget>
<output>5</output>

<gadget id="calculator">82 / 5</gadget>
<output>82/5 = around 16.4</output>

<result>82/5 = around 16.4</result>