When a number is divided by 5, the quotient is 12, and there is a remainder. When the remainder is the largest, what is the dividend.
一个数除以5，商是12，有余数，当余数最大时，被除数是多少．
<gadget id="calculator">12 * 5</gadget>
<output>60</output>

<gadget id="calculator">5 - 1</gadget>
<output>4</output>

<gadget id="calculator">60 + 4</gadget>
<output>64</output>

<result>64</result>