Both the large and small cups are not filled with water. If the small cup is poured into the large cup and the large water cup is filled, there will be 30 grams of water left in the small cup. If part of the water in the large cup is poured into the small cup If the water cup is filled to the brim, there will be 90 grams of water left in the large cup. It is known that the volume of the large cup is 2 cups of the small cup. How many grams of water are there in the two cups?
大、小两个杯子都未装满水，如果将小杯子的部分倒入大杯子，并将大水杯倒满，则小杯子还剩水30克，如果将大杯子中的部分水倒入小水杯将其倒满，则大杯子还剩水90克，已知大杯子容积是小杯子的2杯，两杯子原来共装水多少克．
<gadget id="calculator">90 - 30</gadget>
<output>60</output>

<gadget id="calculator">2 - 1</gadget>
<output>1</output>

<gadget id="calculator">60 / 1</gadget>
<output>60</output>

<gadget id="calculator">60 + 90</gadget>
<output>150</output>

<result>150</result>