Lucy went to the grocery store. She bought 10 packs of cookie and 4 packs of cake. How many more packs of cookie did she buy over cake?
First, we need to find the total number of packs that Lucy bought. 10 packs of cookies plus 4 packs of cake is the same as 10 + 4 packs, so we can say that Lucy bought 14 packs in total. 

Next, we need to find the number of packs of cookies that Lucy bought. 10 packs of cookies is the same as 10/1 packs, so we can say that Lucy bought 10/1 packs of cookies. 

Now, we need to find the number of packs of cake that Lucy bought. 4 packs of cake is the same as 4/1 packs, so we can say that Lucy bought 4/1 packs of cake. 

Finally, we need to find the difference between the number of packs of cookies and the number of packs of cake. The number of packs of cookies is 10/1 and the number of packs of cake is 4/1, so the difference is 6/1. 

We can simplify 6/1 to just 6, so we can say that Lucy bought 6 more packs of cookies than cake. 

Therefore the answer (numeric) is: 

6