Evaluate
55.86
Factor
\frac{3 \cdot 19 \cdot 7 ^ {2}}{2 \cdot 5 ^ {2}} = 55\frac{43}{50} = 55.86
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2.11+\frac{11}{5}\times \frac{25}{4}+40
Divide \frac{11}{5} by \frac{4}{25} by multiplying \frac{11}{5} by the reciprocal of \frac{4}{25}.
2.11+\frac{11\times 25}{5\times 4}+40
Multiply \frac{11}{5} times \frac{25}{4} by multiplying numerator times numerator and denominator times denominator.
2.11+\frac{275}{20}+40
Do the multiplications in the fraction \frac{11\times 25}{5\times 4}.
2.11+\frac{55}{4}+40
Reduce the fraction \frac{275}{20} to lowest terms by extracting and canceling out 5.
\frac{211}{100}+\frac{55}{4}+40
Convert decimal number 2.11 to fraction \frac{211}{100}.
\frac{211}{100}+\frac{1375}{100}+40
Least common multiple of 100 and 4 is 100. Convert \frac{211}{100} and \frac{55}{4} to fractions with denominator 100.
\frac{211+1375}{100}+40
Since \frac{211}{100} and \frac{1375}{100} have the same denominator, add them by adding their numerators.
\frac{1586}{100}+40
Add 211 and 1375 to get 1586.
\frac{793}{50}+40
Reduce the fraction \frac{1586}{100} to lowest terms by extracting and canceling out 2.
\frac{793}{50}+\frac{2000}{50}
Convert 40 to fraction \frac{2000}{50}.
\frac{793+2000}{50}
Since \frac{793}{50} and \frac{2000}{50} have the same denominator, add them by adding their numerators.
\frac{2793}{50}
Add 793 and 2000 to get 2793.
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}