Table:
0
A
B
C
D
E
1
Number of Shares (thousands)
Weighted-Average Exercise Price
Weighted-Average Remaining Contractual Term (years)
Aggregate Intrinsic Value(1) (thousands)
2
Outstanding as of December 31, 2018
4,674
$5.19
3
Granted
—
$ —
4
Exercised
(842)
$2.84
5
Canceled
(130)
$9.41
6
Outstanding as of December 31, 2019
3,702
$5.57
3.52
$6,395
7
Vested and exercisable as of December 31, 2019
3,427
$5.49
3.56
$6,210

Questions and formulas:
Question: What is the total amount spent on the canceled shares?
Formula: B5* C5
Formula2: B5* C5
Level: Calculation
Question: What is difference on the aggregate intrinsic value between Outstanding and Vested and exercisable as of December 31, 2019?
Formula: E6-E7
Formula2: E6-E7
Level: Calculation
Question: What is the difference in outstanding shares as of December 31, 2018 and 2019?
Formula: B2 - B6 
Formula2: B2 - B6 
Level: Calculation