If a number is moved to the right by two places, the number obtained is 78.21 greater than the original number. What is the original number?
一个数若把小数点向右移动两位所得的数比原来数大78.21，这个原数是多少．
<gadget id="calculator">100 - 1</gadget>
<output>99</output>

<gadget id="calculator">78.21 / 99</gadget>
<output>0.79</output>

<result>0.79</result>