The sum of 3.5 times of a number and 0.49 is equal to the quotient of dividing 2.24 by 1.6. Find this number.
一个数的3.5倍与0.49的和等于2.24除以1.6的商，求这个数．
<gadget id="calculator">2.24 / 1.6</gadget>
<output>1.4</output>

<gadget id="calculator">1.4 - 0.49</gadget>
<output>0.91</output>

<gadget id="calculator">0.91 / 3.5</gadget>
<output>0.26</output>

<result>0.26</result>