what is the scientific notation of 0.000089956?
shift the decimal point till you have a number between 1 and 10:
0.000089956
0.00089956 * 10^-1
0.0089956 * 10^-2
0.089956 * 10^-3
0.89956 * 10^-4
8.9956 * 10^-5
Or, just count the leading zeroes and add 1. Then make that a minus power.