What are the values for the multiplier codes of SMTIII: Nocturne?

[Skiller]

the reason is sll v0, a0, XX
its an actual multiplier not a Fixed Value multiplier

040:x2
080:x4
0c0:x8
100:x16
140:x32
180:x64
1c0:x128
200:x256
240:x512
280:x1024

[Duncan Idaho]

Taken from the page of this website
2026A86C 00041280

This is allegedly 1024x for exp, issue is that when I look on my calculator 1024 DEC in HEX is 400. The number reflected here is not 1024.

If the digits to mod start after 280 (which is where the modding begins) is HEX is 640 in DEC.

2026A86C 00041240 This code allegedly multiplies the EXP by 512, same issue, 240 is not 512 but rather 576.