I did (Something) as much as I would in (X amount of time) In english there is a common expression that is "I did (something) as much as I would in (A period of time)". Generally in this pattern the period of time is a large period of time - and the expression is used to express a sense of being impressed. 
I'm trying to figure out if Chinese has an equivalent expression - or a similar way of expressing the meaning. 

For example, how would I say "I laughed more today than I usually would in a week" 
Could I say:
"今天我笑得比正常的一个礼拜多“
You own answer is almost correct. I'd add one character to make sound more natural:
今天我笑得比正常的一个礼拜**还**多