Evaluate
78.8
Factor
\frac{2 \cdot 197}{5} = 78\frac{4}{5} = 78.8
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\frac{197}{2500}\times 1000
Expand \frac{1.97}{25} by multiplying both numerator and the denominator by 100.
\frac{197\times 1000}{2500}
Express \frac{197}{2500}\times 1000 as a single fraction.
\frac{197000}{2500}
Multiply 197 and 1000 to get 197000.
\frac{394}{5}
Reduce the fraction \frac{197000}{2500} to lowest terms by extracting and canceling out 500.
Examples
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4 \sin \theta \cos \theta = 2 \sin \theta
Linear equation
y = 3x + 4
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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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