The sequence of natural numbers from
![](https://st.testna5.ru/images/0c4/0c4a34c7e0ac72c427098b0f216afe72.png)
to
![](https://st.testna5.ru/images/c02/c02a7ad0c77fa581acecfc136c5e3fee.png)
is represented without any spaces between them. The decimal sequence obtained is sorted descending the one-digit numbers corresponding to the decimals. For example for
![](https://st.testna5.ru/images/75c/75c97c0bafcc2e4d9d63b73d44444c47.png)
and
![](https://st.testna5.ru/images/c98/c980d59558cdaf828013d4ddefedb400.png)
the ordered sequence will have the following representation:
98765211110. For
![](https://st.testna5.ru/images/30f/30f00a8608b1ff7ea67d285ac4aefd7a.png)
and
![](https://st.testna5.ru/images/e04/e04fae39e0b3cb5b0557a1c643f0eaaa.png)
the sequence will contain as many “7” digits as____, the first of which is in position with ordinal number _____.
Give your answer in two numbers separated by a comma. For example for
![](https://st.testna5.ru/images/29d/29dce1ed68e5191bc34928df6566bf6e.png)
and
![](https://st.testna5.ru/images/db2/db29d6031c333d5eae4d291fae430162.png)
in the sequence there will be 19 digits of 7 beginning from position number 39. Thus the result is written as 19,39