A number, when divided by 50, the remainder is 2, when divided by 65, the remainder is 5, when divided by 91, the remainder is 7, what is this number?
一个数，除50余2，除65余5，除91余7，求这个数是多少？
<gadget id="calculator">2 * 2 * 3</gadget>
<output>12</output>

<result>12</result>