The greatest common factor of two numbers is 15, the least common multiple is 300, one of the numbers is 60, what is the other number.
两个数的最大公因数是15，最小公倍数是300，其中一个数是60，另一个数是多少．
<gadget id="calculator">300 / 60</gadget>
<output>5</output>

<gadget id="calculator">15 * 5</gadget>
<output>75</output>

<result>75</result>