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$21000$
Calculate the value
$30000 \times \color{#FF6800}{ \dfrac { \color{#FF6800}{ 70 } } { \color{#FF6800}{ 100 } } }$
$ $ Reduce the fraction to the lowest term $ $
$30000 \times \color{#FF6800}{ \dfrac { \color{#FF6800}{ 7 } } { \color{#FF6800}{ 10 } } }$
$\color{#FF6800}{ 30000 } \times \dfrac { 7 } { 10 }$
$ $ Natural numbers can be expressed as fractions with a denominator of 1 $ $
$\color{#FF6800}{ \dfrac { \color{#FF6800}{ 30000 } } { \color{#FF6800}{ 1 } } } \times \dfrac { 7 } { 10 }$
$\dfrac { \color{#FF6800}{ 30000 } } { 1 } \times \dfrac { 7 } { \color{#FF6800}{ 10 } }$
$ $ Reduce all denominators and numerators that can be reduced $ $
$\dfrac { \color{#FF6800}{ 3000 } } { 1 } \times \dfrac { 7 } { \color{#FF6800}{ 1 } }$
$\color{#FF6800}{ \dfrac { \color{#FF6800}{ 3000 } } { \color{#FF6800}{ 1 } } } \color{#FF6800}{ \times } \color{#FF6800}{ \dfrac { \color{#FF6800}{ 7 } } { \color{#FF6800}{ 1 } } }$
$ $ numerator multiply between numerator, and denominators multiply between denominators $ $
$\color{#FF6800}{ \dfrac { \color{#FF6800}{ 3000 } \color{#FF6800}{ \times } \color{#FF6800}{ 7 } } { \color{#FF6800}{ 1 } \color{#FF6800}{ \times } \color{#FF6800}{ 1 } } }$
$\dfrac { \color{#FF6800}{ 3000 } \color{#FF6800}{ \times } \color{#FF6800}{ 7 } } { 1 \times 1 }$
$ $ Multiply $ 3000 $ and $ 7$
$\dfrac { \color{#FF6800}{ 21000 } } { 1 \times 1 }$
$\dfrac { 21000 } { \color{#FF6800}{ 1 } \times 1 }$
$ $ Multiplying any number by 1 does not change the value $ $
$\dfrac { 21000 } { \color{#FF6800}{ 1 } }$
$\dfrac { 21000 } { \color{#FF6800}{ 1 } }$
$ $ If the denominator is 1, the denominator can be removed $ $
$\color{#FF6800}{ 21000 }$
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