When a number is divided by 7, the quotient is 12 and the remainder is 4. What is the number?
一个数除以7，商是12，余数是4，这个数是多少．
<gadget id="calculator">12 * 7</gadget>
<output>84</output>

<gadget id="calculator">84 + 4</gadget>
<output>88</output>

<result>88</result>