The Gregorian calendar that is commonly used in countries all over the world is the Gregorian calendar revised in 1582. It stipulates that the number of AD years that is divisible by 4 is a leap year, but if it is divisible by 100 but not divisible by 400, it is not a leap year. ． According to this rule, how many leap years have there been since 1582?
现在世界各国普遍采用的公历是在1582年修订的格列高里历，它规定：公元年数被4除得尽的是闰年，但如被100除得尽而被400除不尽的则不是闰年．按此规定，从1582年至今共有多少个闰年．
<gadget id="calculator">2_012 - 1_584</gadget>
<output>428</output>

<gadget id="calculator">428 / 4</gadget>
<output>107</output>

<gadget id="calculator">107 + 1</gadget>
<output>108</output>

<gadget id="calculator">108 - 3</gadget>
<output>105</output>

<result>105</result>