25k a year = 100k in 4 years

$25,000 per year ------- $2100 per month ($70 per day)

   $701
+ $702
+ $703
-------------
   $2100

$2100 x 12 = $25,000 per year


2016 = $25,000
2017 = $25,000
2018 = $25,000
2019 = $25,000 ------------ $100,000  per  4 years

2020 = $125,000
2021 = $150,000
2022 = $175,000
2023 = $200,000 ----------- $200,000 after 8 years

2024 = $225,000
2025 = $250,000
2026 = $275,000
2027 = $300,000 ----------- $300,000 after 12 years

2028 = $325,000
2029 = $350,000
2030 = $375,000
2031 = $400,000 ----------- $400,000 after 16 years


TOTAL  after 16 years
$400,000

(cost of house)