Divide a number by 7, add 28, multiply by 5, equal to 700, what is this number?
一个数除以7，加28，乘以5，等于700，这个数是几？
<gadget id="calculator">700 / 5</gadget>
<output>140</output>

<gadget id="calculator">140 - 28</gadget>
<output>112</output>

<gadget id="calculator">112 * 7</gadget>
<output>784</output>

<result>784</result>