On Children's Day, Dad bought a set of children's desks and chairs for Songsong, and the total cost was 266 yuan. Among them, the table was 30% off the list price and the actual cost was 210 yuan, and the chair was 20% off the list price. How much is the original price of the chair?
六一儿童节，爸爸给松松买了一套儿童桌椅，一共用了266元．其中桌子按标价打了七折实际用了210元，椅子按标价打了八折．椅子的原标价是多少元？
<gadget id="calculator">266 - 210</gadget>
<output>56</output>

<gadget id="calculator">80 / 100</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">56 / (4/5)</gadget>
<output>70</output>

<result>70</result>