You are given a math word problem and you are supposed to apply addition or subtraction mathematical operators on the numbers embedded in the text to answer the following question and then only report the final numerical answer.

Ex Input:
A construction company is repaving a damaged road . So far , they have repaved a total of 4938 inches of the road . Today , they repaved 805 inches of the road . How many inches of the road had they repaved before today ?

Ex Output:
4133


Ex Input:
In fourth grade there were 10 students at the start of the year . During the year 4 students left and 42 new students came to school . How many students were in fourth grade at the end ?

Ex Output:
48


Ex Input:
1 evening , a restaurant served a total of 0.2 loaf of wheat bread and 0.4 loaf of white bread . How many loaves were served in all ?

Ex Output:

0.6