The task is to generate the correct answer for a given math problem.

Problem: . 005 / ? = . 01
. 5

Problem: lally ' s internet provider offers unlimited traffic which costs $ 0.5 per day charged off at 12 a . m . the service is discontinued when client ' s debt exceeds $ 5 . if today in the morning lally makes a payment of $ 7 , for how many days , including today , will she be connected to the internet without any additional payments , given her initial balance was $ 0 ?
25

Problem: a man has some hens and cows . if the number of heads be 100 and the number of feet equals 240 , then the number of cows will be :

20