Xiangyang Primary School has a total of 315 students in the fifth and sixth grades, and the number of students in the fifth grade is the sixth grade (4/5). How many students are there in grade six?
向阳小学五、六年级一共315人，五年级学生数是六年级的(4/5)．六年级有多少学生？
<gadget id="calculator">4 + 5</gadget>
<output>9</output>

<gadget id="calculator">5 / 9</gadget>
<output>5/9 = around 0.555556</output>

<gadget id="calculator">315 * (5/9)</gadget>
<output>175</output>

<result>175</result>