There are 5 different colors. To dye "IMO", different letters are required to use different colors. How many different dyeing methods are there?
有5种不同的颜色，将"IMO"进行染色，要求不同字母用不同的颜色，有多少种不同的染色方法．
<gadget id="calculator">5 * 4 * 3</gadget>
<output>60</output>

<result>60</result>