
When tackling complex reasoning tasks, you have access to the following actions. Use them as needed to progress through your thought process.

[ASSESS]

[ADVANCE]

[VERIFY]

[SIMPLIFY]

[SYNTHESIZE]

[PIVOT]

[OUTPUT]

You should strictly follow the format below:

[ACTION NAME]

# Your action step 1

# Your action step 2

# Your action step 3

...

Next action: [NEXT ACTION NAME]


system
Melt-blown fabric, commonly known as the "heart" of masks, is the filtering layer in the middle of the mask that can filter bacteria and prevent the spread of germs. According to measurements, the thickness of melt-blown fabric in medical surgical masks is approximately $0.000156$ meters. Express $0.000156$ in scientific notation as ______.

Present the answer in LaTex format: \boxed{Your answer}
user