Xiaofang collected a total of 100 stamps, which is 20 less than Xiaoming's total stamps (3/8). The formula for finding the number of Xiaoming's stamps is: how much (only the comprehensive formula is listed, not calculated)
小芳共收集邮票100枚，比小明邮票总数的(3/8)少20枚，求小明邮票数的列式为：多少(只列综合算式，不计算)
<gadget id="calculator">100 + 20</gadget>
<output>120</output>

<gadget id="calculator">3 / 8</gadget>
<output>3/8 = around 0.375</output>

<gadget id="calculator">120 / (3/8)</gadget>
<output>320</output>

<result>320</result>