There are two citrus fields with an average yield of 185 kilograms per mu. It is known that one field is 5 mu with an average yield of 203 kilograms and the other with a yield of 170 kilograms per mu. How many acres is this field?
有两块柑桔田，平均亩产185千克，已知一块田是5亩，平均亩产量是203千克，另一块田的亩产量是170千克，这块田是几亩？
<gadget id="calculator">5 * 203</gadget>
<output>1_015</output>

<gadget id="calculator">5 * 185</gadget>
<output>925</output>

<gadget id="calculator">1_015 - 925</gadget>
<output>90</output>

<gadget id="calculator">185 - 170</gadget>
<output>15</output>

<gadget id="calculator">90 / 15</gadget>
<output>6</output>

<result>6</result>