There is a two-digit number, if you subtract 5 from it, the result is a multiple of 4; if you subtract 6 from it, the result is a multiple of 5; if you subtract 7 from it, the result is Multiples of 6. Find the two-digit number.
有一个二位数，若将它减去5，则所得之结果是4的倍数；若将它减去6，则所得之结果是5的倍数；若将它减去7，则所得之结果是6的倍数．试求此二位数．
<gadget id="calculator">2 * 2 * 3 * 5</gadget>
<output>60</output>

<gadget id="calculator">60 + 1</gadget>
<output>61</output>

<result>61</result>