meaning of the expression 4**2022-6*4**522+5*64**510-3*2**330-100 recorded in the number system with the base 8. Determine the number of digits 7 in the record of this number
def func_7(a,b,c,d,e,f,g): return (4**a-b*4**c+d*64**e-f*2**g-h) func_7(2022,6,522,5,510,3,330,100)