COLIN-money market hedging

QN: On September 13, Colin (HK) is due to receive from a UK customer for £10m in five months time.

HK$/£
Spot 13.4550-13.4685

Interest rates
HK deposit:1.50% Borrow:2.35%
UK deposit:1.75% Borrow:2.70%

Answer states to borrow £9.9970m how do they even get there?

I kept getting £9,888,752

X * (1+ (0.027 * 5/12 )) =£10m
X= £9,888,752