"asdf" is a string commonly found in weak passwords. Count the number of occurrences of "asdf" in passwordStr and remove all instances of "asdf" from passwordStr.

Ex$.$ If the input is asdfx $x^{?}$ m $4$ NLVGK $7$ #asdf, then the output is:

Count: $2$

Remaining string: $x^{?}!$m$4$NLVGK$7$#

Note:

string.find$($item$)$ returns the index of the first occurrence of item in string. If no occurrence is found, then the function returns string:npos.

string.replace$($indx$,$ num, subStr$)$ replaces characters at indices ind $x$ to indx$+$num$-1$ with a copy of subStr.