When a number is divided by 7, the quotient is 12, and the remainder is half of the quotient. What is the number?
一个数除以7，商是12，余数是商的一半，这个数是多少．
<gadget id="calculator">12 * 7</gadget>
<output>84</output>

<gadget id="calculator">12 / 2</gadget>
<output>6</output>

<gadget id="calculator">84 + 6</gadget>
<output>90</output>

<result>90</result>