[Grammar] Can we use an indirect question with a question form?

[Mori]

"We would like to know how many calls does it take to evaluate the n th Fibonacci number if we follow the given recurrence."
Source: Lexico

I wonder if it must be the following.
"We would like to know how many calls it takes to evaluate the n th Fibonacci number if we follow the given recurrence."

 

[emsr2d2]

Yes, it should say that. To use "does it take", it would have to say something like:

We would like to know something - how many calls does it take to ... recurrence?