Mom bought some wool and used it to knit sweaters for Dad (7/10) and gloves for Xiaohong (1/20). What math questions can you ask?
妈妈买了一些毛线，给爸爸织毛衣用了(7/10)，给小红织手套用了(1/20)．你能提出什么数学问题？
<gadget id="calculator">7 / 10</gadget>
<output>7/10 = around 0.7</output>

<gadget id="calculator">1 / 20</gadget>
<output>1/20 = around 0.05</output>

<gadget id="calculator">1 - (7/10) - (1/20)</gadget>
<output>1/4 = around 0.25</output>

<result>1/4 = around 0.25</result>