Dic:// and then some

─. (Mainly US Informal) and even more
─. and considerably more in addition
─. (spoken informal) used to say that the actual amount is probably a lot more than what someone has just said.

• It looked like 20,000 people and then some at the demonstration.
• It cost me a week's salary and then some.
• "They say he earns $2.5 million a season." "And then some."

─. some: An indefinite additional quantity
─. some: a certain amount (more). In the phrases some more and (informal) and then some.

• did the assigned work and then some.

..... CALD, WordNet, LDOCE, American Heritage, Collins