When a number is divided by 7, the quotient is 86 and the remainder is 5. What is this number?
一个数除以7，商86余5，这个数是多少．
<gadget id="calculator">86 * 7</gadget>
<output>602</output>

<gadget id="calculator">602 + 5</gadget>
<output>607</output>

<result>607</result>