There are 60 students in a certain grade, students who like to play table tennis account for (2/3) of the whole grade, students who like football account for (3/4) of the whole grade, students who like to play basketball account for (4/5) of the whole grade ), at least how many students in this grade like these three sports.
某年级共有60名学生，喜欢打乒乓球的同学占全年级的(2/3)，喜欢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)，这个年级的学生中至少有多少名同学这三项运动都喜欢．
<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">60 * (2/3)</gadget>
<output>40</output>

<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">45 - 60</gadget>
<output>-15</output>

<gadget id="calculator">40 + (-15)</gadget>
<output>25</output>

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

<gadget id="calculator">40 + (-12)</gadget>
<output>28</output>

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

<gadget id="calculator">48 - 25 - 28 - 33</gadget>
<output>-38</output>

<gadget id="calculator">40 + 45 + (-38)</gadget>
<output>47</output>

<gadget id="calculator">60 - 47</gadget>
<output>13</output>

<result>13</result>