Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 7d91263d53f91402b12e5303d575a6b8850ae37f3a8bd0f91eca3ed0b0998e6e:13:8
   |
13 |         let f1 = fee * I1B2sqr / scale * I2B1sqr / scale - I1B2;
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^