9 baskets of tomatoes of equal mass are shipped from the farmer’s market. If 15 kilograms are taken from each basket, the remaining tomatoes in the 9 baskets are equal to the mass of the original 4 baskets. How many kilograms of tomatoes are shipped to the farmers market?
农贸市场运来质量相等的9筐西红柿，如果每筐取出15千克，9个筐里剩下的西红柿等于原来4筐的质量．农贸市场运来多少千克西红柿？
<gadget id="calculator">9 - 4</gadget>
<output>5</output>

<gadget id="calculator">9 / 5</gadget>
<output>9/5 = around 1.8</output>

<gadget id="calculator">15 * (9/5) * 9</gadget>
<output>243</output>

<result>243</result>