5 times a number, minus the product of 3.5 and 14, the difference is 26, find this number? (column equation solution)
一个数的5倍，减去3.5与14的积，差是26，求这个数？(列方程解答)
<gadget id="calculator">3.5 * 14</gadget>
<output>49</output>

<gadget id="calculator">26 + 49</gadget>
<output>75</output>

<gadget id="calculator">75 / 5</gadget>
<output>15</output>

<result>15</result>