A total of 439 kilograms of apples, pears, and bananas were transported into Jiulin Supermarket. If pears increase by 1 kilogram, the mass ratio of these three fruits is 5:7:8. How many kilograms of pears were shipped back?
九林超市运进苹果、梨、香蕉共439千克，如果梨增加1千克，则这三种水果的质量比是5：7：8，梨运回了多少千克？
<gadget id="calculator">439 + 1</gadget>
<output>440</output>

<gadget id="calculator">5 + 7 + 8</gadget>
<output>20</output>

<gadget id="calculator">440 / 20</gadget>
<output>22</output>

<gadget id="calculator">22 * 7</gadget>
<output>154</output>

<gadget id="calculator">154 - 1</gadget>
<output>153</output>

<result>153</result>