【(21*3/7+4/7*21)*1/4(99+9/10)÷94/5+5/6÷5/814/15÷[(4/5+2/3)*10/11](5/6+4/5)*301/3+3÷1/25/6*6/5-9/10÷9/54-5/11-7/111/8*58+1/8*41+1/84/5*4/7*5/4-1/24/5*5/6+2/5÷3/54/5÷[(5/8-1/2)÷5/8]235-135÷183/5*153-0.6*53】
(21*3/7+4/7*21)*1/4
(99+9/10)÷9
4/5+5/6÷5/8
14/15÷[(4/5+2/3)*10/11]
(5/6+4/5)*30
1/3+3÷1/2
5/6*6/5-9/10÷9/5
4-5/11-7/11
1/8*58+1/8*41+1/8
4/5*4/7*5/4-1/2
4/5*5/6+2/5÷3/5
4/5÷[(5/8-1/2)÷5/8]
235-135÷18
3/5*153-0.6*53