way to solve it

I write the solution.

私は解き方を書きます

I write the solution on the blackboard.

私は黒板に解き方を書きます

I write the solution on the blackboard in front of my classmates.

私は黒板に友達の前で解き方を書きます

I write the solution on the blackboard in front of my classmates during the lesson.

私は黒板に友達の前で授業中に解き方を書きます

I write the solution in detail on the blackboard in front of my classmates during the lesson.

私は黒板に友達の前で授業中に詳しく解き方を書きます