190 students in the sixth grade returned to school, 90% more than those who asked for leave. How many people in the sixth grade asked for leave?
六年级有190名学生回校，比请假的多90%，六年级有多少人请假？
<gadget id="calculator">90 / 100</gadget>
<output>9/10 = around 0.9</output>

<gadget id="calculator">1 + (9/10)</gadget>
<output>19/10 = around 1.9</output>

<gadget id="calculator">190 / (19/10)</gadget>
<output>100</output>

<result>100</result>