The correct rate of the questionnaire for parents of Xincheng Primary School in the construction of a civilized city reached 98%. Only 28 parents failed to answer the students' interviews. How many parents of Xincheng Primary School participated in this questionnaire?
文明城市创建中新城小学家长问卷的正确率达到了98%，只有28个家长在学生的采访问答中答不全，那新城小学一共有多少家长参与本次的问卷？
<gadget id="calculator">98 / 100</gadget>
<output>49/50 = around 0.98</output>

<gadget id="calculator">1 - (49/50)</gadget>
<output>1/50 = around 0.02</output>

<gadget id="calculator">28 / (1/50)</gadget>
<output>1_400</output>

<result>1_400</result>