There are 60 students in a certain grade, students who like to play football account for 3/4 of the whole grade, students who like to play basketball account for 4/5 of the whole grade, how many students in this grade like both sports ．
某年级60名学生，喜欢踢足球的同学占全年级的(3/4)，喜欢打篮球的同学占全年级的(4/5)，这个年级的学生中有多少名同学两项运动都喜欢．
<gadget id="calculator">3 / 4</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">60 * (3/4)</gadget>
<output>45</output>

<gadget id="calculator">4 / 5</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">60 * (4/5)</gadget>
<output>48</output>

<gadget id="calculator">48 - 60</gadget>
<output>-12</output>

<gadget id="calculator">45 + (-12)</gadget>
<output>33</output>

<result>33</result>