There are 3 groups in the dance class of the Children's Palace, each group has 43 people; the chorus class has 120 people, which interest class has more people? How many people?
少年宫的舞蹈班有3个组，每组43人；合唱班有120人，哪个兴趣班的人多？多多少人？
<gadget id="calculator">43 * 3</gadget>
<output>129</output>

<gadget id="calculator">129 - 120</gadget>
<output>9</output>

<result>9</result>