Galaxy Company has rented 4 offices, each with an area of 36.5 square meters. The total monthly rent for the 4 offices is 2190 yuan. How much is the average monthly rent per square meter?
星河公司租了4间办公室，每间面积36.5平方米，4间办公室每月总租金是2190元，平均每平方米每月租金多少元？
<gadget id="calculator">4 * 36.5</gadget>
<output>146</output>

<gadget id="calculator">2_190 / 146</gadget>
<output>15</output>

<result>15</result>