check the picture below, so the distance of the house from the other side is that blue gap.
so, there are 12 inches in 1 foot, so let's just convert all those feet to inches and subtract them.
[tex]\bf 56'\implies (56\cdot 12)''\implies 672''
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5'5''\implies (5\cdot 12+5)''\implies 65''
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34'10''\implies (34\cdot 12 + 10)''\implies 418''\\\\
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672''-(65+418)''\implies 189''\implies 15'9''[/tex]
