Analyze the image and extract the mathematical operations and their results.

The image contains several mathematical calculations, appearing to be divisions and possibly subtractions or additions. Here's a breakdown:

Calculation 1:

Top left:

• \[ 205 \]

  \[ - 918 \]

  ------

  \[ 321 \]

This calculation seems to be a subtraction, but the order of operations is unusual (larger number subtracted from smaller). Assuming it's intended as a subtraction:

\[ 918 - 205 = 713 \] or \[ 205 - 918 = -713 \]

The result '321' does not directly follow from a standard subtraction of 205 and 918.

Calculation 2:

Middle section:

• \[ 80400 \]

  \[ - 1896 \]

  ------

  \[ 78277 \]

This also appears to be a subtraction.

\[ 80400 - 1896 = 78504 \]

The result '78277' is close but not exact.

Calculation 3:

Top right:

• \[ 72632 \]

  \[ - 370 \]

  ------

  \[ 743890 \]

This subtraction is incorrectly calculated, as subtracting 370 from 72632 would result in a smaller number.

Calculation 4:

Middle section, right side, appears to be a division setup:

• \[ 374280 \] divided by \[ 270 \]

This indicates the dividend is 374280 and the divisor is 270.

Calculation 5:

Bottom left:

• \[ 20 \]

  \[ - 71 \]

  ------

  \[ 34 \]

Similar to calculation 1, this subtraction is presented in an unusual order.

Summary of Observations:

• The image contains handwritten mathematical calculations, predominantly subtractions and one division setup.
• Several of the presented subtractions appear to be incorrectly calculated or written in a non-standard order.
• The numbers and operations suggest a context of elementary arithmetic practice.

No definitive, accurately calculated results can be confirmed for all operations as presented.