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Bollywood choreographer Saroj Khan is planning to produce a Broadway show based on historical dancer Amrapali, with actress Madhuri Dixit playing the lead. "Amrapali is very famous abroad.
We are planning to start a Broadway show based on her. Our talks are on and if everything goes as per plan then Madhuri Dixit will play the main character," said Saroj.
"Javed Akhtar will write the lyrics and Feroze Khan will direct it," she added. Saroj, who has worked with famous Bollywood actresses like Sri Devi and Karishma Kapoor, has always professed sharing a special bond with Madhuri.
The duo have belted out hit dance numbers together like Ek Do Teen from the film Tezaab, Chane Ke Khet from Anjaam and Dola Re from Devdas. The 42-year-old actress, who was once the reigning of Bollywood due to her dancing and acting skills, took a break from films following her marriage with US based doctor Shriram.

Source : http://in.news.yahoo.com/20/20091208/1416/tnl-saroj-khan-planning-a-broadway-with.html

Please explain to me the emboldened parts.
I guess "belt out" means to sing a song loudly but have no idea what they mean by "dance numbers" and so "belted out hit dance numbers".
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User_garyI guess "belt out" means to sing a song loudly
More like enthusiastically but your guess is close.
User_garyno idea what they mean by "dance numbers" and so "belted out hit dance numbers".
See this definition of "number" from http://www.answers.com/main/ntquery?s=number&gwp=13
13. One of the separate offerings in a program of music or other entertainment: The band's second number was a march.

So a "dance number" is just a song that people dance to.
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Thanks alot. But the meaning "one of the separate offerings ........." is not quite clear and I can't understand it.
Anyway, do you mean they both sang the hit songs? or do you mean they both choreographed for the hit songs?