It is 0.3043478260869565217391 with the underlined string repeating.
7.92
The decimal form of 7 over 10 is 0.7.
7/21:= 7 ÷ 21= 0.333 in decimal
3 over 7 = 0.42857142857143
.7
7 4/21 in decimal form is 7.190476 . . .
0.5714
.07
0.4375
0.143
0.056
1.2857