How many such digits are there in the number | vedclass

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(C) Original number: $5831649$Arranging the digits in ascending order: $1345689$Comparing the positions:Original: $5, 8, 3, 1, 6, 4, 9$Ascending: $1,

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Two

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(C) Original number: $5831649$Arranging the digits in ascending order: $1345689$Comparing the positions:Original: $5, 8, 3, 1, 6, 4, 9$Ascending: $1, 3, 4, 5, 6, 8, 9$Comparing index by index:$1^{st}$ digit: $5 
eq 1$$2^{nd}$ digit: $8 
eq 3$$3^{rd}$ digit: $3 
eq 4$$4^{th}$ digit: $1 
eq 5$$5^{th}$ digit: $6 = 6$ (Match)$6^{th}$ digit: $4 
eq 8$$7^{th}$ digit: $9 = 9$ (Match)Thus,there are $2$ such digits ($6$ and $9$) that remain in the same position.

How many such digits are there in the number $5831649$ each of which is as far away from the beginning of the number as when the digits are rearranged in ascending order?

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