Evaluate
1638.75
Factor
\frac{3 \cdot 5 \cdot 19 \cdot 23}{2 ^ {2}} = 1638\frac{3}{4} = 1638.75
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640+6.25\times 175-5\times 18-5
Multiply 10 and 64 to get 640.
640+1093.75-5\times 18-5
Multiply 6.25 and 175 to get 1093.75.
1733.75-5\times 18-5
Add 640 and 1093.75 to get 1733.75.
1733.75-90-5
Multiply 5 and 18 to get 90.
1643.75-5
Subtract 90 from 1733.75 to get 1643.75.
1638.75
Subtract 5 from 1643.75 to get 1638.75.
Examples
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{ 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}