Question 1055565
Use the conversion:
{{{ 1 }}} m = {{{ 39.37 }}} in
{{{ 1 }}} mile = {{{ 5280 }}} ft
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In terms of just units:
[ m/sec ] x [ inches/m ] x [ ft/inches ] x [ miles/ft ] x [ sec/min ] x [ min/hr ] = [ miles/hr ]
Can you follow all the cancellations? Suppose I just rewrite it this way:
[ m/m ] x [ inches/inches ] x [ ft/ft ] x [ sec/sec ] x [ min/min ] x [ miles/hr ] = [ miles/hr ]
( As long as I didn't mess it up ! )
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Now just plug in numbers to solve.
{{{ ( 1454/1 )*( 39.37/1 )*( 1/12 )*( 1/5280 )*( 60/1 )*( 60/1 ) }}}
{{{ 57243.98*( 1/12 )*( 1/5280 )*( 60/1 )*( 60/1 ) }}}
{{{ 57243.98*( 1/63360 )*( 3600/1 ) }}}
{{{ 206078328/63360 }}}
{{{ 3252.498864 }}} 
About 3,252.5 miles/hr
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Check carefully -I could have got my eyes crossed!