Five and six graders went to plant trees, 47 people went to the fifth grade, and 12 people went to the sixth grade, three times more than the fifth grade. How many people went there in total?
五六年级同学去植树，五年级去了47人，六年级去的人数比五年级的3倍还多12人，问一共去了多少人？
<gadget id="calculator">47 * 3</gadget>
<output>141</output>

<gadget id="calculator">141 + 12</gadget>
<output>153</output>

<gadget id="calculator">47 + 153</gadget>
<output>200</output>

<result>200</result>