There are 30 students in the third grade of Experimental Primary School making small red flowers for the new students in the first grade. Each of them has already made 4 flowers. If they make 68 more, each first-grade child will get 1 flower. How many new classmates are there in the first grade?
实验小学三年级有30个同学为一年级的新同学做小红花，每个人已经做好了4朵，如果再做68朵，一年级小朋友每人就能得到1朵．一年级共有多少个新同学？
<gadget id="calculator">30 * 4</gadget>
<output>120</output>

<gadget id="calculator">120 + 68</gadget>
<output>188</output>

<result>188</result>