c$++"123"$ is a string commonly found in weak passwords. Remove all occurrences of $"123"$ from passwordStr. Then, assign lengthStr with the length of passwordStr.

Ex: If the input is $123$N&x@pv$7$gHJ$9,$ then the output is:

Remaining string: N&x@pv$7$gHJ$9$

Length: $11$

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 indx to indx$+$num$-1$ with a copy of subStr.