Mom bought 20 kilograms of rice and 30 kilograms of flour from the grain store and paid a total of 172.6 yuan. It is known that each kilogram of rice is 3.2 yuan. How much is each kilogram of flour?
妈妈从粮店买回20千克大米和30千克面粉，一共付了172.6元，已知每千克大米是3.2元，每千克面粉多少元？
<gadget id="calculator">3.2 * 20</gadget>
<output>64</output>

<gadget id="calculator">172.6 - 64</gadget>
<output>108.6</output>

<gadget id="calculator">108.6 / 30</gadget>
<output>3.62</output>

<result>3.62</result>