When a number is divided by 4, the quotient is 15 and the remainder is 2. What is the number?
一个数除以4，商是15，余数是2，这个数是多少．
<gadget id="calculator">4 * 15</gadget>
<output>60</output>

<gadget id="calculator">60 + 2</gadget>
<output>62</output>

<result>62</result>