Table:
0
A
B
C
1
Group
2
2019
2018
3
S$ Mil
S$ Mil
4
Operating expenses included the following:
5
Auditors' remuneration
6
- KPMG LLP, Singapore
2.4
-
7
- KPMG, Australia
1.2
-
8
- Other KPMG offices
1.3
-
9
- Deloitte & Touche LLP, Singapore
-
1.5
10
- Deloitte Touche Tohmatsu, Australia
-
1.2
11
- Other Deloitte & Touche offices
-
2.1
12
Non-audit fees (1) paid to
13
- KPMG LLP, Singapore
0.4
-
14
- KPMG, Australia
0.4
-
15
- Other KPMG offices
0.1
-
16
- Deloitte & Touche LLP, Singapore
- -
0.3
17
- Deloitte Touche Tohmatsu, Australia
-
0.3
18
- Other Deloitte & Touche offices
-
0.2
19
Impairment of trade receivables
121.8
128.0
20
Allowance for inventory obsolescence
1.1
7.1
21
Operating lease payments
437.2
470.7

Questions and formulas:
Question: What is the average impairment of trade receivables across the 2 years?
Formula: (128 + B19)/2
Formula2: (128 + B19)/2
Level: Calculation