Zhu Bajie found a watermelon, divided it into 12 pieces on average, ate 5 pieces secretly, and planned to distribute 4 pieces to Monkey King and Wu Jing, and the rest to the master. How much of the whole watermelon is given to the master. (fill in the score)
猪八戒找到一个西瓜，把它平均分成12块，自己偷偷吃了5块，打算分给孙悟空和悟净共4块，其余的给师傅．给师傅的占整个西瓜的多少．(填分数)
<gadget id="calculator">12 - 5 - 4</gadget>
<output>3</output>

<gadget id="calculator">3 / 12</gadget>
<output>1/4 = around 0.25</output>

<result>1/4 = around 0.25</result>