There are 18 boys in the fifth grade, and 11 girls are 3 times less than the number of boys. How many girls are there?
五年级男生有18人，女生人数比男生人数的3倍少11人，女生有多少人？
<gadget id="calculator">18 * 3</gadget>
<output>54</output>

<gadget id="calculator">54 - 11</gadget>
<output>43</output>

<result>43</result>