• 娄(many times; piled up)
• 攵(tap; hand motion)

Counting numbers is using your hand to tap repeatedly many times in order to calculate.

• 人(person; human (pictographic))

A person holding a tool means "to use" or "to take" in order to work.

• 丿(stroke; expansion; many)
• 十(ten)

Ten multiplied many times becomes a thousand — the stroke above the number ten symbolizes an enormous quantity.

• 言(word; speech)
• 十(ten)

Calculation is using words to count numbers one by one.

• 娄(many times; piled up)
• 攵(tap; hand motion)

Counting numbers is using your hand to tap repeatedly many times in order to calculate.

• 人(person; human (pictographic))

A person holding a tool means "to use" or "to take" in order to work.

• 丿(stroke; expansion; many)
• 十(ten)

Ten multiplied many times becomes a thousand — the stroke above the number ten symbolizes an enormous quantity.

• 言(word; speech)
• 十(ten)

Calculation is using words to count numbers one by one.