You don't. There's nothing to pick. They can be "cracked" or "bypassed" easily enough, but "picking" is by definition, the insertion of a tool to place pins into an appropriate position. A combination lock has none of those features and thus can't be picked.
The best way to bypass a master lock is with shims. That's the easiest method.
There are several ways to crack locks as well however, but most of those are far more involved than simply using a shim.
You need to contact the lock company. They will reset it or tell you how it can be done. You may need a new password.
15% of 178 = 15% * 178 = 0.15 * 178 = 26.7
They are: 2*89 = 178 and 1*178 = 178
30% of 178= 30% * 178= 0.3 * 178= 53.4
Half of 178 is 178/2 = 89
178 percent of 600 = 1068 178% of 600 = 178% * 600 = 178%/100% * 600 = 1.78 * 600 = 1068
25
15% = 0.15 15% off 178 = 178 - (0.15 x 178) = 151.3
178
50% of 178 = 178*50/100 = 89
178/1
It is: 178/9 times 9 = 178 or 19 and 7/9 times 9 = 178