Guoguo and her mother went to the supermarket together. They spent 1/5 of the total amount on toiletries (1/5) more than 100 yuan, bought snacks (1/3) less than 20 yuan, and bought another 600 yuan of drinking water. I just spent all the money I brought, how much money did Guoguo's mother bring in total?
果果和妈妈一起去超市，买洗漱用品花了总钱数的(1/5)多100元，买小食品花了余下的(1/3)少20元，又买了一个600元的饮水机，正好花完所带的钱，果果妈妈一共带了多少钱？
<gadget id="calculator">600 - 20</gadget>
<output>580</output>

<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">1 - (1/3)</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">580 / (2/3)</gadget>
<output>870</output>

<gadget id="calculator">870 + 100</gadget>
<output>970</output>

<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">1 - (1/5)</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">970 / (4/5)</gadget>
<output>2_425/2 = around 1_212.5</output>

<result>2_425/2 = around 1_212.5</result>