\(480:\left[75+\left(7^2-8.3\right):5\right]+108^0\\ =480:\left[75+\left(49-24\right):5\right]+1\\ =480:\left(75+25:5\right)+1\\ =480:\left(75+5\right)+1\\ =480:80+1\\ =6+1=7\)
\(480:\left[75+\left(7^2-8.3\right):5\right]+108^0\)
\(=480:[75+(49-8.3):5]+1\)
\(=480:[75+(49-24):5]+1\)
\(=480:[75+25:5]+1\)
\(=480:[75+5]+1\)
\(=480:80+1\)
\(=6+1\)
\(=7\)
480 : [ 75 + ( 7 2 − 8.3 ) : 5 ] + 108 0 = 480 : [ 75 + ( 49 − 24 ) : 5 ] + 1 = 480 : ( 75 + 25 : 5 ) + 1 = 480 : ( 75 + 5 ) + 1 = 480 : 80 + 1 = 6 + 1 = 7
