If a two-digit number is divided by 10, 12, and 15, the remainder is 1. What is the number?
一个两位数用10、12、15去除都余1，这个数是多少．
<gadget id="calculator">2 * 2 * 3 * 5</gadget>
<output>60</output>

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

<result>61</result>