Evaluate
\frac{661}{7}\approx 94.428571429
Factor
\frac{661}{7} = 94\frac{3}{7} = 94.42857142857143
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3+\frac{14+6}{7}\times 4\times 8
Multiply 2 and 7 to get 14.
3+\frac{20}{7}\times 4\times 8
Add 14 and 6 to get 20.
3+\frac{20\times 4}{7}\times 8
Express \frac{20}{7}\times 4 as a single fraction.
3+\frac{80}{7}\times 8
Multiply 20 and 4 to get 80.
3+\frac{80\times 8}{7}
Express \frac{80}{7}\times 8 as a single fraction.
3+\frac{640}{7}
Multiply 80 and 8 to get 640.
\frac{21}{7}+\frac{640}{7}
Convert 3 to fraction \frac{21}{7}.
\frac{21+640}{7}
Since \frac{21}{7} and \frac{640}{7} have the same denominator, add them by adding their numerators.
\frac{661}{7}
Add 21 and 640 to get 661.
Examples
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{ x } ^ { 2 } - 4 x - 5 = 0
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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}