Solve for S
S=20910.59712
Assign S
S≔20910.59712
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S=42000\times 0.84^{4}
Subtract 0.16 from 1 to get 0.84.
S=42000\times 0.49787136
Calculate 0.84 to the power of 4 and get 0.49787136.
S=20910.59712
Multiply 42000 and 0.49787136 to get 20910.59712.
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