Please fill in the know quantities, leave the quantity to be solved blank, and click the Solve button to solve it. Keep in mind that the cash flows in different directions need to have opposite signs.
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The last row is a Javascript calculator. You can calculate any expressions and you can also use variables. In Java, the multiplication sign is *, the division sign is /, a^{n} is expressed as Math.pow(a,n), ln(x) is expressed as Math.log(x), e^{x} is expressed as Math.exp(x), and the square root of x is expressed as Math.sqrt(x).