Evaluate
20
Factor
5\times 2^{2}
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\left(22.9\times \frac{5}{4}+27.1\times \frac{1\times 4+1}{4}\right)\times \frac{8}{25}
Divide 22.9 by \frac{4}{5} by multiplying 22.9 by the reciprocal of \frac{4}{5}.
\left(\frac{229}{10}\times \frac{5}{4}+27.1\times \frac{1\times 4+1}{4}\right)\times \frac{8}{25}
Convert decimal number 22.9 to fraction \frac{229}{10}.
\left(\frac{229\times 5}{10\times 4}+27.1\times \frac{1\times 4+1}{4}\right)\times \frac{8}{25}
Multiply \frac{229}{10} times \frac{5}{4} by multiplying numerator times numerator and denominator times denominator.
\left(\frac{1145}{40}+27.1\times \frac{1\times 4+1}{4}\right)\times \frac{8}{25}
Do the multiplications in the fraction \frac{229\times 5}{10\times 4}.
\left(\frac{229}{8}+27.1\times \frac{1\times 4+1}{4}\right)\times \frac{8}{25}
Reduce the fraction \frac{1145}{40} to lowest terms by extracting and canceling out 5.
\left(\frac{229}{8}+27.1\times \frac{4+1}{4}\right)\times \frac{8}{25}
Multiply 1 and 4 to get 4.
\left(\frac{229}{8}+27.1\times \frac{5}{4}\right)\times \frac{8}{25}
Add 4 and 1 to get 5.
\left(\frac{229}{8}+\frac{271}{10}\times \frac{5}{4}\right)\times \frac{8}{25}
Convert decimal number 27.1 to fraction \frac{271}{10}.
\left(\frac{229}{8}+\frac{271\times 5}{10\times 4}\right)\times \frac{8}{25}
Multiply \frac{271}{10} times \frac{5}{4} by multiplying numerator times numerator and denominator times denominator.
\left(\frac{229}{8}+\frac{1355}{40}\right)\times \frac{8}{25}
Do the multiplications in the fraction \frac{271\times 5}{10\times 4}.
\left(\frac{229}{8}+\frac{271}{8}\right)\times \frac{8}{25}
Reduce the fraction \frac{1355}{40} to lowest terms by extracting and canceling out 5.
\frac{229+271}{8}\times \frac{8}{25}
Since \frac{229}{8} and \frac{271}{8} have the same denominator, add them by adding their numerators.
\frac{500}{8}\times \frac{8}{25}
Add 229 and 271 to get 500.
\frac{125}{2}\times \frac{8}{25}
Reduce the fraction \frac{500}{8} to lowest terms by extracting and canceling out 4.
\frac{125\times 8}{2\times 25}
Multiply \frac{125}{2} times \frac{8}{25} by multiplying numerator times numerator and denominator times denominator.
\frac{1000}{50}
Do the multiplications in the fraction \frac{125\times 8}{2\times 25}.
20
Divide 1000 by 50 to get 20.
Examples
Quadratic equation
{ x } ^ { 2 } - 4 x - 5 = 0
Trigonometry
4 \sin \theta \cos \theta = 2 \sin \theta
Linear equation
y = 3x + 4
Arithmetic
699 * 533
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
\lim _{x \rightarrow-3} \frac{x^{2}-9}{x^{2}+2 x-3}