Node_Calculator

It's a busy day in class. The teacher bot explains that the students need to use the nodecalculator service to calculate their binary distance to the closest leaderbot. The young bots complain to you, "This doesn't make any sense to me, although to be honest, I didn't make any notes. You're a human, can't you figure out how this service works?"

Can you figure out how to use this service?

Sample request: (POST request, Content-Type is application/xml) testing