The cube of 1 plus 3 is 27, so the cube of 30 is 27000 (less than 59000). Similarly, the cube of 4 is 64, so the cube of 40 is 64000 (greater than 59000), so it can be concluded that 593 19 must be the cube of 30. .. Ten digits is "3" .. Think again, which number has the cube of 9. It can only be 9 (the cube of 9 is 9). So the cube root of 593 19 is 39.

2.. 148877. Remove the last three digits of 877 to get 148000.

Because the cube of 5 is 125, then the cube of 50 is 125000 (less than 148000).

Similarly, the cube of 6 is 2 16, so the cube of 60 is 2 16000 (greater than 148000).

So 148877 is the cube of the 1950s.

Look again,

148877 bit is 7. Let's guess, which number is cubic 7? There are only three, so it is 53.