When Geongrin measured a span of his hand, it was 12 centimeters (cm) long. Gyeongrin measured the length of the long side of the notebook, and it was twice as long as the span. Approximately, how long is the long side of the notebook in centimeters (cm)?
12 2 [OP_MUL]
var_a = 12
var_b = 2
var_c = var_a * var_b
print(int(var_c))