During the 15% discount in the shopping mall, my mother bought a coat and a schoolbag, which cost a total of 323 yuan. Given that the original price of the coat is 220 yuan, how much is the original price of the schoolbag?
在商场打八五折时，妈妈买了一件外衣和一个书包，共花了323元．已知外衣原价220元，书包原价多少元？
<gadget id="calculator">85 / 100</gadget>
<output>17/20 = around 0.85</output>

<gadget id="calculator">220 * (17/20)</gadget>
<output>187</output>

<gadget id="calculator">323 - 187</gadget>
<output>136</output>

<gadget id="calculator">136 / (17/20)</gadget>
<output>160</output>

<result>160</result>