=(8+2/2006+1+2004/2006)×3又3/5÷9又3/5÷3又3/4
=10×(3+3/5)÷(9+3/5)÷(3+3/4)
=10×(1+1/5)÷(3+1/5)÷(3+3/4)
=10×6/16÷15/4
=1