Li Ming's mother went to the supermarket to buy washing powder. The unit prices of Diaopai and Ariel were 8 yuan and 10 yuan respectively. With the money Li's mother brought, she could buy 3 more bags of Diaopai washing powder than Arilang washing powder, and there was no surplus. money. Question: How much money did Li's mother bring?
李明的妈妈去超市买洗衣粉，雕牌和碧浪的单价分别为8元和10元，李妈妈带的钱买雕牌洗衣粉比买碧浪洗衣粉可多买3袋，并且没有剩余的钱．问：李妈妈带了多少元钱？
<gadget id="calculator">1 / 8</gadget>
<output>1/8 = around 0.125</output>

<gadget id="calculator">1 / 10</gadget>
<output>1/10 = around 0.1</output>

<gadget id="calculator">(1/8) - (1/10)</gadget>
<output>1/40 = around 0.025</output>

<gadget id="calculator">3 / (1/40)</gadget>
<output>120</output>

<result>120</result>