The fruit shop shipped pineapples, sold (1/10) of the total on the first day, and (4/5) of the total on the second day, leaving 150 kilograms. How many kilograms are there in this batch of pineapples?
水果店运来菠萝，第一天售出总数的(1/10)，第二天售出总数的(4/5)，还剩下150千克．这批菠萝共有多少千克？
<gadget id="calculator">1 / 10</gadget>
<output>1/10 = around 0.1</output>

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

<gadget id="calculator">1 - (1/10) - (4/5)</gadget>
<output>1/10 = around 0.1</output>

<gadget id="calculator">150 / (1/10)</gadget>
<output>1_500</output>

<result>1_500</result>