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:
At the beach , Miki and her sister both built sandcastles and then measured their heights . Miki 's sandcastle was 0.8333333333333334 foot tall and her sister 's was 0.5 foot tall . How much taller was Miki 's sandcastle than her sister 's ?

Ex Output:
0.3333333333333333

Ex Input:
During a canned food drive , items were sorted into bins . The drive resulted in 0.125 bin of soup , 0.125 bin of vegetables , and 0.5 bin of pasta . Altogether , how many bins would the canned food take up ?

Ex Output:
0.75

Ex Input:
Before the recent housing boom , there were 1426 houses in Lawrence County . Now , there are 2000 houses . How many houses did developers build during the housing boom ?

Ex Output:
574