There are 147 students in the fifth grade of Hongxing Primary School, which is 15 more than the number of students in the fourth grade (2/3). How many students are there in the fourth grade?
红星小学五年级有学生147人，比四年级学生人数的(2/3)多15人，四年级有学生多少人？
<gadget id="calculator">147 - 15</gadget>
<output>132</output>

<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">132 / (2/3)</gadget>
<output>198</output>

<result>198</result>