Simple calculation: (1) 6.33 × 101-6.33 (2) 35.6-5 × 1.73

Simple calculation: (1) 6.33 × 101-6.33 (2) 35.6-5 × 1.73

（1）6.33×101-6.33
= 6.33×(101-1)
= 6.33×100
= 633

Calculation: (65 / 7 + 65 / 9) / (5 / 7 + 5 / 9); 12.5 * (36-36 / 5) / 3.6; 1 / 4 * (4.85 / 5 / 18-3.6 + 6.15 * 18 / 5)
1998/1998*1999+1998/1999；18/5*127/5+37.9*32/5

65 / 7 + 65 / 9 = 65 * 16 / 63, which is the breakthrough
5 / 7 + 5 / 9 = 5 * 16 / 63 2 out of the test to rely on their own, so it's still their own count
The second breakthrough is in 3.6. It's OK to put forward 3.6 of the above formula
The third one can't help you with so many divisors that you can't see clearly --
The fourth one changed the following one to 1998 * 1998 / 1998 * 1999
It's OK to add the two formulas together to raise the common factor
The fifth 37.9 seems to be copied wrong. It won't be so abrupt