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I received a notice that I passed the exam of class 2 boiler operator.
I'm mighty pleased.
I applied for an issue of an operator's license at once.
I can't wait to get the licence.

By the way, I tried calculating the cost to get the certificate.
It was about \50,000. Because I had to attend
a mandatory expensive workshop on a 3 days trip
and take a exam whose venue is very far twice.
It wasn't a waste of money. I was relieved.