To remove the first 7 digits of the string in POWER BI. You need to go through some process
In the Query Editor, you can use
Transform->Split Column->By Number of Characters and then use these settings:
Then one file will open SPLIT COLUMN BY NO OF CHARACTER
Then write no of character
You need to choose repeatedly among them, After that, you need to choose between rows and columns
Then fill that box no of columns to split into=(), write any no according to your need...
Code:
LEFT(TableName[ColumnName], 7)