Mom withdraws 10,000 yuan from the bank. It costs 6,888 yuan to buy a color TV, and 2,100 yuan to buy a washing machine. How much money does mother have left? (answer in two ways)
妈妈从银行里取出10000元钱．买彩电用去6888元，买洗衣机用去2100元，妈妈还剩多少钱？(用两种方法解答)
<result>1_021</result>