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.
Well, honey, 678 is divisible by 1, 2, 3, 6, 113, 226, 339, and 678. So, take your pick! Just don't come crying to me if you pick the wrong one and end up with a remainder.
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