The value of 3200328=ab,{.} denotes the fractional part, then (b-a) is equal to.

32003=32001⋅32=9(27)667=9(28−1)667=9 667C028667−667C1(28)666+….-667C667that means if we divides 32003 by 28, remainder is 19.thus, 3200328=1928=ab⇒b−a=28−19=9