Given:
- Annual payment (f(t)): $700,000
- Number of years (t): 20 years
- Interest rate (r): 7%
Using the formula for present value:
\[PV = \int_{0}^{t} f(t) \cdot e^{-rt} dt\]
\[PV = \int_{0}^{20} 700,000 \cdot e^{-0.07t} dt\]
\[PV = \frac{700,000}{0.07} \cdot
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