The sum of the big and small numbers is 780. After reducing the large number to 1/9, it is exactly equal to the small number. What is the large number?
大小两数之和是780，把大数缩小它的(1/9)后，恰好与小数相等，大数是几？
<gadget id="calculator">9 + 1</gadget>
<output>10</output>

<gadget id="calculator">780 / 10</gadget>
<output>78</output>

<gadget id="calculator">780 - 78</gadget>
<output>702</output>

<result>702</result>