Evaluate
20.191
Factor
\frac{61 \cdot 331}{2 ^ {3} \cdot 5 ^ {3}} = 20\frac{191}{1000} = 20.191
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\frac{130.382-90}{2}
Subtract 49.618 from 180 to get 130.382.
\frac{40.382}{2}
Subtract 90 from 130.382 to get 40.382.
\frac{40382}{2000}
Expand \frac{40.382}{2} by multiplying both numerator and the denominator by 1000.
\frac{20191}{1000}
Reduce the fraction \frac{40382}{2000} to lowest terms by extracting and canceling out 2.
Examples
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Matrix
\left[ \begin{array} { l l } { 2 } & { 3 } \\ { 5 } & { 4 } \end{array} \right] \left[ \begin{array} { l l l } { 2 } & { 0 } & { 3 } \\ { -1 } & { 1 } & { 5 } \end{array} \right]
Simultaneous equation
\left. \begin{cases} { 8x+2y = 46 } \\ { 7x+3y = 47 } \end{cases} \right.
Differentiation
\frac { d } { d x } \frac { ( 3 x ^ { 2 } - 2 ) } { ( x - 5 ) }
Integration
\int _ { 0 } ^ { 1 } x e ^ { - x ^ { 2 } } d x
Limits
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