Known natural sequence: 1.2.3.4.5. ... 10.11.12. ..., all the numbers greater than or equal to 10 in this sequence are separated into single digits by commas to form a new sequence: 1.2.3.4. ...9.1.0.1.1.1.2.1.3.1.4． …1.9.2.0.2.1． ...What is the 100th number in this sequence.
已知自然数列：1.2.3.4.5．….10.11.12．…，把这个数列中大于或等于10的数，全部用逗号隔成一位数，组成一个新数列：1.2.3.4．….9.1.0.1.1.1.2.1.3.1.4．…1.9.2.0.2.1．…此数列中的第100个数是多少．
<result>5</result>