If you compare numbers based on the hundreds digit, the digits to the left (thousands and ten-thousands) remain the same, while the hundreds digit differs.
This applies for any five-digit numbers structured like:
(3)(5)(not 7)(any digit)(any digit).
Digits to the right of the decimal point, as well as those in the tens and ones places, don't impact this comparison.
Explicación paso a paso: para este caso estamos viendo cuántas veces encaja 0.02 en 80. 0.02 * 50 = 1, así que luego multiplicamos 50 * 80 y obtenemos nuestra respuesta de 4,000. Espero que esto sea útil