Xiaoying's average score in the previous math tests was 80, but this time she scored 98, so she raised the average score to 83. How many exams is this time?
小英前几次数学测验的平均分是80分，而这一次她考了98分，于是将平均分提高到了83分．这一次是第几次考试？
<gadget id="calculator">98 - 80</gadget>
<output>18</output>

<gadget id="calculator">83 - 80</gadget>
<output>3</output>

<gadget id="calculator">18 / 3</gadget>
<output>6</output>

<result>6</result>