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

[Q]: Problem: a family pays $ 800 per year for an insurance plan that pays 70 percent of the first $ 1,000 in expenses and 100 percent of all medical expenses thereafter . in any given year , the total amount paid by the family will equal the amount paid by the plan when the family ' s medical expenses total how much ?
[A]: $ 1,400


[Q]: Problem: the average of temperatures at noontime from monday to friday is 55 ; the lowest one is 45 , what is the possible maximum range of the temperatures ?
[A]: 40


[Q]: Problem: the difference between the place value and the face value of 9 in the numeral 856973 is
[A]:
891