【(5又4分之1-18.875)乘(3又3分之2--10.5)-41又48分之25】除以﹣23又3分之1
=【-13.625乘41/6-41又48分之25】除以﹣23又3分之1
=【(12+13/8)/8×(6+5/6)-41又25/48】÷(-23又1/3)
=【12×6+12×5/6+13/8×6+13/8×5/6-41又25/48】÷(-23又1/3)
=【82+39/4+65/48-41又25/48】÷(-70/3)
=【41+39/4+5/6】×(-3/70)
=【49+31/12】×(-3/70)
=-49×3/70-31/12×3/70
=-2.1-31/280
=-2又59/280