Question

check the divisibility .21436597 by 9

Answer 1

divisibility rule of 9=sum of all digits should be a multiple of9
2+1+4+3+6+5+9+7=37
37is not a multiple of 9 so 0.21436597 is not a multiple of 9

Answer 2

divisibility of 9= sum of the digits of the number/9

                        0.21436597

                 sum=2+1+4+3+6+5+9+7

                        =37

37 is not divisible by 9.

so, 0.21436597 is not divisible by 9